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<span>Gallows</span> </div> </a> <ul id="toc-Gallows-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Coffins" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Coffins"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>Coffins</span> </div> </a> <ul id="toc-Coffins-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Railways" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Railways"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>Railways</span> </div> </a> <ul id="toc-Railways-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Biology" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Biology"> <div class="vector-toc-text"> <span class="vector-toc-numb">5</span> <span>Biology</span> </div> </a> <ul id="toc-Biology-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Star_traps_in_theatre" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Star_traps_in_theatre"> <div class="vector-toc-text"> <span class="vector-toc-numb">6</span> <span>Star traps in theatre</span> </div> </a> <ul id="toc-Star_traps_in_theatre-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Fiction" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Fiction"> <div class="vector-toc-text"> <span class="vector-toc-numb">7</span> <span>Fiction</span> </div> </a> <ul id="toc-Fiction-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-See_also" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#See_also"> <div class="vector-toc-text"> <span class="vector-toc-numb">8</span> <span>See also</span> </div> </a> <ul id="toc-See_also-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-References" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#References"> <div class="vector-toc-text"> <span class="vector-toc-numb">9</span> <span>References</span> </div> </a> <ul id="toc-References-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-External_links" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#External_links"> <div class="vector-toc-text"> <span class="vector-toc-numb">10</span> <span>External links</span> </div> </a> <ul id="toc-External_links-sublist" class="vector-toc-list"> </ul> </li> </ul> </div> </div> </nav> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> <nav aria-label="Contents" class="vector-toc-landmark"> <div id="vector-page-titlebar-toc" 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<div id="p-lang-btn" class="vector-dropdown mw-portlet mw-portlet-lang" > <input type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector" aria-label="Go to an article in another language. Available in 18 languages" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-18" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">18 languages</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D8%A8%D8%A7%D8%A8_%D9%85%D8%B3%D8%AD%D9%88%D8%B1" title="باب مسحور – Arabic" lang="ar" hreflang="ar" data-title="باب مسحور" data-language-autonym="العربية" data-language-local-name="Arabic" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-an mw-list-item"><a href="https://an.wikipedia.org/wiki/Trapa" title="Trapa – Aragonese" lang="an" hreflang="an" data-title="Trapa" data-language-autonym="Aragonés" data-language-local-name="Aragonese" class="interlanguage-link-target"><span>Aragonés</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Escotilla" title="Escotilla – Catalan" lang="ca" hreflang="ca" data-title="Escotilla" data-language-autonym="Català" data-language-local-name="Catalan" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Fallt%C3%BCr" title="Falltür – German" lang="de" hreflang="de" data-title="Falltür" data-language-autonym="Deutsch" data-language-local-name="German" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Escotilla" title="Escotilla – Spanish" lang="es" hreflang="es" data-title="Escotilla" data-language-autonym="Español" data-language-local-name="Spanish" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-gl mw-list-item"><a href="https://gl.wikipedia.org/wiki/Zap%C3%B3n" title="Zapón – Galician" lang="gl" hreflang="gl" data-title="Zapón" data-language-autonym="Galego" data-language-local-name="Galician" class="interlanguage-link-target"><span>Galego</span></a></li><li class="interlanguage-link interwiki-io mw-list-item"><a href="https://io.wikipedia.org/wiki/Trapo" title="Trapo – Ido" lang="io" hreflang="io" data-title="Trapo" data-language-autonym="Ido" data-language-local-name="Ido" class="interlanguage-link-target"><span>Ido</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Bari_(pintu)" title="Bari (pintu) – Indonesian" lang="id" hreflang="id" data-title="Bari (pintu)" data-language-autonym="Bahasa Indonesia" data-language-local-name="Indonesian" class="interlanguage-link-target"><span>Bahasa Indonesia</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Botola" title="Botola – Italian" lang="it" hreflang="it" data-title="Botola" data-language-autonym="Italiano" data-language-local-name="Italian" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Valluik" title="Valluik – Dutch" lang="nl" hreflang="nl" data-title="Valluik" data-language-autonym="Nederlands" data-language-local-name="Dutch" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-nap mw-list-item"><a href="https://nap.wikipedia.org/wiki/Aucc%C3%A9tte" title="Auccétte – Neapolitan" lang="nap" hreflang="nap" data-title="Auccétte" data-language-autonym="Napulitano" data-language-local-name="Neapolitan" class="interlanguage-link-target"><span>Napulitano</span></a></li><li class="interlanguage-link interwiki-no mw-list-item"><a href="https://no.wikipedia.org/wiki/Falld%C3%B8r" title="Falldør – Norwegian Bokmål" lang="nb" hreflang="nb" data-title="Falldør" data-language-autonym="Norsk bokmål" data-language-local-name="Norwegian Bokmål" class="interlanguage-link-target"><span>Norsk bokmål</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/W%C5%82az" title="Właz – Polish" lang="pl" hreflang="pl" data-title="Właz" data-language-autonym="Polski" data-language-local-name="Polish" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Al%C3%A7ap%C3%A3o" title="Alçapão – Portuguese" lang="pt" hreflang="pt" data-title="Alçapão" data-language-autonym="Português" data-language-local-name="Portuguese" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-simple mw-list-item"><a href="https://simple.wikipedia.org/wiki/Trap_door" title="Trap door – Simple English" lang="en-simple" hreflang="en-simple" data-title="Trap door" data-language-autonym="Simple English" data-language-local-name="Simple English" class="interlanguage-link-target"><span>Simple English</span></a></li><li class="interlanguage-link interwiki-th mw-list-item"><a href="https://th.wikipedia.org/wiki/%E0%B8%9B%E0%B8%A3%E0%B8%B0%E0%B8%95%E0%B8%B9%E0%B8%81%E0%B8%A5" title="ประตูกล – Thai" lang="th" hreflang="th" data-title="ประตูกล" data-language-autonym="ไทย" data-language-local-name="Thai" class="interlanguage-link-target"><span>ไทย</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%9B%D1%8E%D0%BA" title="Люк – Ukrainian" lang="uk" hreflang="uk" data-title="Люк" data-language-autonym="Українська" data-language-local-name="Ukrainian" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/%E6%9A%97%E9%96%80" title="暗門 – Chinese" lang="zh" hreflang="zh" data-title="暗門" data-language-autonym="中文" data-language-local-name="Chinese" class="interlanguage-link-target"><span>中文</span></a></li> </ul> <div class="after-portlet after-portlet-lang"><span class="wb-langlinks-edit wb-langlinks-link"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q1666492#sitelinks-wikipedia" title="Edit interlanguage links" class="wbc-editpage">Edit links</a></span></div> </div> </div> </div> </header> <div class="vector-page-toolbar"> <div class="vector-page-toolbar-container"> <div id="left-navigation"> <nav aria-label="Namespaces"> <div id="p-associated-pages" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-associated-pages" > <div class="vector-menu-content"> <ul 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</div> </div> <div id="bodyContent" class="vector-body" aria-labelledby="firstHeading" data-mw-ve-target-container> <div class="vector-body-before-content"> <div class="mw-indicators"> </div> <div id="siteSub" class="noprint">From Wikipedia, the free encyclopedia</div> </div> <div id="contentSub"><div id="mw-content-subtitle"></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="en" dir="ltr"><div class="shortdescription nomobile noexcerpt noprint searchaux" style="display:none">Sliding or hinged door that is flush with the surface of a floor, ceiling, or roof</div> <style data-mw-deduplicate="TemplateStyles:r1236090951">.mw-parser-output .hatnote{font-style:italic}.mw-parser-output div.hatnote{padding-left:1.6em;margin-bottom:0.5em}.mw-parser-output .hatnote i{font-style:normal}.mw-parser-output .hatnote+link+.hatnote{margin-top:-0.5em}@media print{body.ns-0 .mw-parser-output .hatnote{display:none!important}}</style><div role="note" class="hatnote navigation-not-searchable">For other uses, see <a href="/wiki/Trapdoor_(disambiguation)" class="mw-disambig" title="Trapdoor (disambiguation)">Trapdoor (disambiguation)</a>.</div> <style data-mw-deduplicate="TemplateStyles:r1251242444">.mw-parser-output .ambox{border:1px solid #a2a9b1;border-left:10px solid #36c;background-color:#fbfbfb;box-sizing:border-box}.mw-parser-output .ambox+link+.ambox,.mw-parser-output .ambox+link+style+.ambox,.mw-parser-output .ambox+link+link+.ambox,.mw-parser-output .ambox+.mw-empty-elt+link+.ambox,.mw-parser-output .ambox+.mw-empty-elt+link+style+.ambox,.mw-parser-output .ambox+.mw-empty-elt+link+link+.ambox{margin-top:-1px}html body.mediawiki .mw-parser-output .ambox.mbox-small-left{margin:4px 1em 4px 0;overflow:hidden;width:238px;border-collapse:collapse;font-size:88%;line-height:1.25em}.mw-parser-output .ambox-speedy{border-left:10px solid #b32424;background-color:#fee7e6}.mw-parser-output .ambox-delete{border-left:10px solid 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role="presentation"><tbody><tr><td class="mbox-image"><div class="mbox-image-div"><span typeof="mw:File"><span><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/b/b4/Ambox_important.svg/40px-Ambox_important.svg.png" decoding="async" width="40" height="40" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/b/b4/Ambox_important.svg/60px-Ambox_important.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/b/b4/Ambox_important.svg/80px-Ambox_important.svg.png 2x" data-file-width="40" data-file-height="40" /></span></span></div></td><td class="mbox-text"><div class="mbox-text-span"><div class="multiple-issues-text mw-collapsible"><b>This article has multiple issues.</b> Please help <b><a href="/wiki/Special:EditPage/Trapdoor" title="Special:EditPage/Trapdoor">improve it</a></b> or discuss these issues on the <b><a href="/wiki/Talk:Trapdoor" title="Talk:Trapdoor">talk page</a></b>. <small><i>(<a href="/wiki/Help:Maintenance_template_removal" title="Help:Maintenance template removal">Learn how and when to remove these messages</a>)</i></small> <div class="mw-collapsible-content"> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1251242444"><table class="box-Context plainlinks metadata ambox ambox-style ambox-Context" role="presentation"><tbody><tr><td class="mbox-image"><div class="mbox-image-div"><span typeof="mw:File"><span><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/f/f2/Edit-clear.svg/40px-Edit-clear.svg.png" decoding="async" width="40" height="40" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/f/f2/Edit-clear.svg/60px-Edit-clear.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/f/f2/Edit-clear.svg/80px-Edit-clear.svg.png 2x" data-file-width="48" data-file-height="48" /></span></span></div></td><td class="mbox-text"><div class="mbox-text-span">This article <b>provides insufficient context for those unfamiliar with the subject</b>.<span class="hide-when-compact"> Please help <a class="external text" href="https://en.wikipedia.org/w/index.php?title=Trapdoor&action=edit">improve the article</a> by <a href="/wiki/Wikipedia:Writing_better_articles#Provide_context_for_the_reader" title="Wikipedia:Writing better articles">providing more context for the reader</a>.</span> <span class="date-container"><i>(<span class="date">March 2018</span>)</i></span><span class="hide-when-compact"><i> (<small><a href="/wiki/Help:Maintenance_template_removal" title="Help:Maintenance template removal">Learn how and when to remove this message</a></small>)</i></span></div></td></tr></tbody></table> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1251242444"><table class="box-Expand_language plainlinks metadata ambox ambox-notice skin-invert-image" role="presentation"><tbody><tr><td class="mbox-image"><div class="mbox-image-div"><span typeof="mw:File"><span><img alt="" 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.hidden-begin{width:auto!important;clear:none!important;float:none!important}}</style><div class="hidden-begin mw-collapsible mw-collapsed" style="font-size:100%; padding: 0px;"><div class="hidden-title skin-nightmode-reset-color" style="text-align:center; padding-right: 3em; font-weight: normal; text-align: left">You can help <b>expand this article with text translated from <a href="https://it.wikipedia.org/wiki/Botola" class="extiw" title="it:Botola">the corresponding article</a> in Italian</b>.  <i><small>(March 2018)</small></i> <small>Click [show] for important translation instructions.</small></div><div class="hidden-content mw-collapsible-content" style=""> <ul><li class="mw-empty-elt"></li> <li>Machine translation, like <a rel="nofollow" class="external text" href="https://deepl.com">DeepL</a> or <a rel="nofollow" class="external text" href="https://translate.google.com/">Google Translate</a>, is a useful starting point for translations, but translators must revise errors as 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srcset="//upload.wikimedia.org/wikipedia/en/thumb/f/f2/Edit-clear.svg/60px-Edit-clear.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/f/f2/Edit-clear.svg/80px-Edit-clear.svg.png 2x" data-file-width="48" data-file-height="48" /></span></span></div></td><td class="mbox-text"><div class="mbox-text-span">The article's <a href="/wiki/Wikipedia:Manual_of_Style/Lead_section" title="Wikipedia:Manual of Style/Lead section">lead section</a> <b>may need to be rewritten</b>.<span class="hide-when-compact"> Please help <a class="external text" href="https://en.wikipedia.org/w/index.php?title=Trapdoor&action=edit">improve the lead</a> and read the <a href="/wiki/Wikipedia:Manual_of_Style/Lead_section" title="Wikipedia:Manual of Style/Lead section">lead layout guide</a>.</span> <span class="date-container"><i>(<span class="date">March 2018</span>)</i></span><span class="hide-when-compact"><i> (<small><a href="/wiki/Help:Maintenance_template_removal" title="Help:Maintenance template removal">Learn how and when to remove this message</a></small>)</i></span></div></td></tr></tbody></table> </div> </div><span class="hide-when-compact"><i> (<small><a href="/wiki/Help:Maintenance_template_removal" title="Help:Maintenance template removal">Learn how and when to remove this message</a></small>)</i></span></div></td></tr></tbody></table> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Trapdoor.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/f/fb/Trapdoor.jpg/220px-Trapdoor.jpg" decoding="async" width="220" height="165" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/f/fb/Trapdoor.jpg/330px-Trapdoor.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/f/fb/Trapdoor.jpg/440px-Trapdoor.jpg 2x" data-file-width="1280" data-file-height="960" /></a><figcaption>A trapdoor to a <a href="/wiki/Bomb_shelter" title="Bomb shelter">bomb shelter</a> from <a href="/wiki/World_War_II" title="World War II">World War II</a></figcaption></figure> <p>A <b>trapdoor</b> is a sliding or hinged door that is flush with the surface of a floor, ceiling, or roof.<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> It is traditionally small in size.<sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> It was invented to facilitate the hoisting of grain up through mills, however, its list of uses has grown over time.<sup id="cite_ref-nottinghamcity1_3-0" class="reference"><a href="#cite_note-nottinghamcity1-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> The trapdoor has played a pivotal function in the operation of the <a href="/wiki/Gallows" title="Gallows">gallows</a>, <a href="/wiki/Cargo_ships" class="mw-redirect" title="Cargo ships">cargo ships</a>, <a href="/wiki/Trains" class="mw-redirect" title="Trains">trains</a>,<sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> <a href="/wiki/Booby_trap" title="Booby trap">booby traps</a>,<sup id="cite_ref-5" class="reference"><a href="#cite_note-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> and more recently theatre and films.<sup id="cite_ref-theatrecrafts1_6-0" class="reference"><a href="#cite_note-theatrecrafts1-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-filmsite1963_7-0" class="reference"><a href="#cite_note-filmsite1963-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="History">History</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Trapdoor&action=edit&section=1" title="Edit section: History"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:StateLibQld_1_148179_Omega_(ship).jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/1/11/StateLibQld_1_148179_Omega_%28ship%29.jpg/220px-StateLibQld_1_148179_Omega_%28ship%29.jpg" decoding="async" width="220" height="131" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/1/11/StateLibQld_1_148179_Omega_%28ship%29.jpg/330px-StateLibQld_1_148179_Omega_%28ship%29.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/1/11/StateLibQld_1_148179_Omega_%28ship%29.jpg/440px-StateLibQld_1_148179_Omega_%28ship%29.jpg 2x" data-file-width="1000" data-file-height="597" /></a><figcaption>Deck hatch of the <a href="/wiki/Omega_(barque)" title="Omega (barque)"><i>Omega</i></a>, the last <a href="/wiki/Square_rig" title="Square rig">square-rigged</a> sailing cargo ship</figcaption></figure> <p>Originally, trapdoors were sack traps in mills, and allowed the sacks to pass up through the mill while naturally falling back to a closed position.<sup id="cite_ref-nottinghamcity1_3-1" class="reference"><a href="#cite_note-nottinghamcity1-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> </p><p>Many buildings with flat <a href="/wiki/Roof" title="Roof">roofs</a> have hatches that provide access to the roof. On <a href="/wiki/Ship" title="Ship">ships</a>, hatches—usually not flush, and never called trapdoors—provide access to the <a href="/wiki/Deck_(ship)" title="Deck (ship)">deck</a>. <a href="/wiki/Cargo_ship" title="Cargo ship">Cargo ships</a>, including <a href="/wiki/Bulk_carrier" title="Bulk carrier">bulk carriers</a>, have large hatches for access to the <a href="/wiki/Hold_(ship)" class="mw-redirect" title="Hold (ship)">holds</a>. </p> <div class="mw-heading mw-heading2"><h2 id="Gallows">Gallows</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Trapdoor&action=edit&section=2" title="Edit section: Gallows"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Most 19th- and early 20th-century <a href="/wiki/Gallows" title="Gallows">gallows</a> featured a trapdoor, usually with two flaps. The condemned was placed at the join. The edge of a trapdoor farthest from the hinge accelerates faster than gravity, so that the condemned does not hit the flaps but falls freely. </p> <div class="mw-heading mw-heading2"><h2 id="Coffins">Coffins</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Trapdoor&action=edit&section=3" title="Edit section: Coffins"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>In 1784, the reusable <a href="/wiki/Economy_coffin" title="Economy coffin">economy coffin</a> was mandated by <a href="/wiki/Joseph_II,_Holy_Roman_Emperor" title="Joseph II, Holy Roman Emperor">Joseph II, Holy Roman Emperor</a>. The coffins had a trapdoor in their base. The coffin would be lowered into the grave and a lever operated that opened the trapdoor, allowing the body to fall to the bottom of the grave.<sup id="cite_ref-8" class="reference"><a href="#cite_note-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-9" class="reference"><a href="#cite_note-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Railways">Railways</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Trapdoor&action=edit&section=4" title="Edit section: Railways"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1237032888/mw-parser-output/.tmulti">.mw-parser-output .tmulti .multiimageinner{display:flex;flex-direction:column}.mw-parser-output .tmulti .trow{display:flex;flex-direction:row;clear:left;flex-wrap:wrap;width:100%;box-sizing:border-box}.mw-parser-output .tmulti .tsingle{margin:1px;float:left}.mw-parser-output .tmulti .theader{clear:both;font-weight:bold;text-align:center;align-self:center;background-color:transparent;width:100%}.mw-parser-output .tmulti .thumbcaption{background-color:transparent}.mw-parser-output .tmulti .text-align-left{text-align:left}.mw-parser-output .tmulti .text-align-right{text-align:right}.mw-parser-output .tmulti .text-align-center{text-align:center}@media all and (max-width:720px){.mw-parser-output .tmulti .thumbinner{width:100%!important;box-sizing:border-box;max-width:none!important;align-items:center}.mw-parser-output .tmulti .trow{justify-content:center}.mw-parser-output .tmulti .tsingle{float:none!important;max-width:100%!important;box-sizing:border-box;text-align:center}.mw-parser-output .tmulti .tsingle .thumbcaption{text-align:left}.mw-parser-output .tmulti .trow>.thumbcaption{text-align:center}}@media screen{html.skin-theme-clientpref-night .mw-parser-output .tmulti .multiimageinner img{background-color:white}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .tmulti .multiimageinner img{background-color:white}}</style><div class="thumb tmulti tleft"><div class="thumbinner multiimageinner" style="width:254px;max-width:254px"><div class="trow"><div class="tsingle" style="width:252px;max-width:252px"><div class="thumbimage"><span typeof="mw:File"><a href="/wiki/File:Amtrak_Downeaster_conductor_standing_in_Amfleet_car_doorway.jpg" class="mw-file-description"><img alt="An Amtrak conductor standing in the doorway of an Amfleet cars with its trapdoor in the closed position" src="//upload.wikimedia.org/wikipedia/commons/thumb/c/c5/Amtrak_Downeaster_conductor_standing_in_Amfleet_car_doorway.jpg/250px-Amtrak_Downeaster_conductor_standing_in_Amfleet_car_doorway.jpg" decoding="async" width="250" height="188" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/c/c5/Amtrak_Downeaster_conductor_standing_in_Amfleet_car_doorway.jpg/375px-Amtrak_Downeaster_conductor_standing_in_Amfleet_car_doorway.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/c/c5/Amtrak_Downeaster_conductor_standing_in_Amfleet_car_doorway.jpg/500px-Amtrak_Downeaster_conductor_standing_in_Amfleet_car_doorway.jpg 2x" data-file-width="3648" data-file-height="2736" /></a></span></div><div class="thumbcaption">Amtrak conductors standing in the doorways of Amfleet cars with their trapdoors in the closed (above) and open (below) positions</div></div></div><div class="trow"><div class="tsingle" style="width:252px;max-width:252px"><div class="thumbimage"><span typeof="mw:File"><a href="/wiki/File:Amtrak_conductor_stands_in_train_door_as_westbound_Cardinal_departs_Staunton.jpg" class="mw-file-description"><img alt="An Amtrak conductor standing in the doorway of an Amfleet cars with its trapdoor in the open position" src="//upload.wikimedia.org/wikipedia/commons/thumb/b/b4/Amtrak_conductor_stands_in_train_door_as_westbound_Cardinal_departs_Staunton.jpg/250px-Amtrak_conductor_stands_in_train_door_as_westbound_Cardinal_departs_Staunton.jpg" decoding="async" width="250" height="188" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/b/b4/Amtrak_conductor_stands_in_train_door_as_westbound_Cardinal_departs_Staunton.jpg/375px-Amtrak_conductor_stands_in_train_door_as_westbound_Cardinal_departs_Staunton.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/b/b4/Amtrak_conductor_stands_in_train_door_as_westbound_Cardinal_departs_Staunton.jpg/500px-Amtrak_conductor_stands_in_train_door_as_westbound_Cardinal_departs_Staunton.jpg 2x" data-file-width="3648" data-file-height="2736" /></a></span></div></div></div></div></div> <p>The term trapdoor also refers to a plate in the entry vestibule of a <a href="/wiki/Passenger_car_(rail)" class="mw-redirect" title="Passenger car (rail)">passenger railcar</a> that permits access to <a href="/wiki/Railway_platform_height" title="Railway platform height">high-level platforms</a> when lying flat against the floor of the car, and which can be flipped open to expose steps for accessing ground-level platforms. Many American commuter railroads which operate the <a href="/wiki/Comet_(railcar)" title="Comet (railcar)">Comet</a> railcars made by <a href="/wiki/Bombardier_Transportation" title="Bombardier Transportation">Bombardier</a> have trapdoors to accommodate passengers boarding and alighting on both high-level and ground-level platforms. <a href="/wiki/Amtrak" title="Amtrak">Amtrak</a>'s <a href="/wiki/Viewliner" title="Viewliner">Viewliner</a>, <a href="/wiki/Amfleet" title="Amfleet">Amfleet</a>, and <a href="/wiki/Horizon_(railcar)" title="Horizon (railcar)">Horizon</a> railcar fleets all have trapdoors. </p> <div style="clear:both;" class=""></div> <div class="mw-heading mw-heading2"><h2 id="Biology">Biology</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Trapdoor&action=edit&section=5" title="Edit section: Biology"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p><a href="/wiki/Trapdoor_spider" class="mw-redirect" title="Trapdoor spider">Trapdoor spiders</a> hide in an underground nest they line with their silk, and then conceal it with a hinged silk lid, the trapdoor.<sup id="cite_ref-10" class="reference"><a href="#cite_note-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Star_traps_in_theatre">Star traps in theatre</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Trapdoor&action=edit&section=6" title="Edit section: Star traps in theatre"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure typeof="mw:File/Thumb"><a href="/wiki/File:Drury_Lane_Star_trap_VA.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/5/52/Drury_Lane_Star_trap_VA.jpg/220px-Drury_Lane_Star_trap_VA.jpg" decoding="async" width="220" height="164" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/5/52/Drury_Lane_Star_trap_VA.jpg/330px-Drury_Lane_Star_trap_VA.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/5/52/Drury_Lane_Star_trap_VA.jpg/440px-Drury_Lane_Star_trap_VA.jpg 2x" data-file-width="3476" data-file-height="2596" /></a><figcaption>19th century Star trap from the <a href="/wiki/Theatre_Royal,_Drury_Lane" title="Theatre Royal, Drury Lane">Theatre Royal, Drury Lane</a>, London, Now at the <a href="/wiki/Victoria_and_Albert_Museum" title="Victoria and Albert Museum">Victoria and Albert Museum</a></figcaption></figure> <p>In theatrical use, "star traps" allowed explosively fast appearances on stage, such as <a href="/wiki/Jinn" title="Jinn">jinn</a> appearing in a puff of smoke.<sup id="cite_ref-theatrecrafts1_6-1" class="reference"><a href="#cite_note-theatrecrafts1-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Fiction">Fiction</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Trapdoor&action=edit&section=7" title="Edit section: Fiction"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Trapdoors are occasionally used as <b>hidden doors</b> in fiction, as entrances to <a href="/wiki/Secret_passage" title="Secret passage">secret passageways</a>, <a href="/wiki/Dungeons" class="mw-redirect" title="Dungeons">dungeons</a>, or to secret <a href="/wiki/Tunnel" title="Tunnel">tunnels</a>. They also appear as literal traps into which a hapless pedestrian may fall if they happen to step on one. Other types of doors or other objects are also sometimes used as hidden doors. </p><p>A trapdoor figures prominently in a late scene of the 1963 film <i><a href="/wiki/Charade_(1963_film)" title="Charade (1963 film)">Charade</a></i>. </p> <div class="mw-heading mw-heading2"><h2 id="See_also">See also</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Trapdoor&action=edit&section=8" title="Edit section: See also"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/Trap_(disambiguation)" class="mw-redirect mw-disambig" title="Trap (disambiguation)">Trap (disambiguation)</a></li> <li><a href="/wiki/Angstloch" title="Angstloch">Angstloch</a></li> <li><a href="/wiki/Trapdoor_function" title="Trapdoor function">Trapdoor function</a></li> <li><a href="/wiki/Patio" title="Patio">Patio</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="References">References</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Trapdoor&action=edit&section=9" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist"> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-1"><span class="mw-cite-backlink"><b><a href="#cite_ref-1">^</a></b></span> <span class="reference-text">Oxford English Dictionary 2nd ed</span> </li> <li id="cite_note-2"><span class="mw-cite-backlink"><b><a href="#cite_ref-2">^</a></b></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://dictionary.cambridge.org/dictionary/english/trapdoor">"TRAPDOOR | meaning in the Cambridge English Dictionary"</a>. Dictionary.cambridge.org. 2022-05-25<span class="reference-accessdate">. Retrieved <span class="nowrap">2022-05-31</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=TRAPDOOR+%26%23124%3B+meaning+in+the+Cambridge+English+Dictionary&rft.pub=Dictionary.cambridge.org&rft.date=2022-05-25&rft_id=https%3A%2F%2Fdictionary.cambridge.org%2Fdictionary%2Fenglish%2Ftrapdoor&rfr_id=info%3Asid%2Fen.wikipedia.org%3ATrapdoor" class="Z3988"></span></span> </li> <li id="cite_note-nottinghamcity1-3"><span class="mw-cite-backlink">^ <a href="#cite_ref-nottinghamcity1_3-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-nottinghamcity1_3-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20101117093655/http://www.nottinghamcity.gov.uk/index.aspx?articleid=1033">"Greens Mill"</a>. Archived from <a rel="nofollow" class="external text" href="http://www.nottinghamcity.gov.uk/index.aspx?articleid=1033">the original</a> on 2010-11-17.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Greens+Mill&rft_id=http%3A%2F%2Fwww.nottinghamcity.gov.uk%2Findex.aspx%3Farticleid%3D1033&rfr_id=info%3Asid%2Fen.wikipedia.org%3ATrapdoor" class="Z3988"></span></span> </li> <li id="cite_note-4"><span class="mw-cite-backlink"><b><a href="#cite_ref-4">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://www.federalregister.gov/documents/2015/12/07/2015-30488/passenger-train-exterior-side-door-safety">"Federal Register :: Request Access"</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Federal+Register+%3A%3A+Request+Access&rft_id=https%3A%2F%2Fwww.federalregister.gov%2Fdocuments%2F2015%2F12%2F07%2F2015-30488%2Fpassenger-train-exterior-side-door-safety&rfr_id=info%3Asid%2Fen.wikipedia.org%3ATrapdoor" class="Z3988"></span></span> </li> <li id="cite_note-5"><span class="mw-cite-backlink"><b><a href="#cite_ref-5">^</a></b></span> <span class="reference-text">When the Burgular Goes a-Burgling. Popular Science October 1919, Page 43.</span> </li> <li id="cite_note-theatrecrafts1-6"><span class="mw-cite-backlink">^ <a href="#cite_ref-theatrecrafts1_6-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-theatrecrafts1_6-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.theatrecrafts.com/pages/home/glossary-of-technical-theatre-terms/trap-doors-stage/">"Trap Doors On Stage"</a>. Theatrecrafts.com<span class="reference-accessdate">. Retrieved <span class="nowrap">12 November</span> 2018</span>. <q>A set of triangular sprung flaps in the stage floor through which an actor can be propelled from a lift below stage.</q></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Trap+Doors+On+Stage&rft.pub=Theatrecrafts.com&rft_id=http%3A%2F%2Fwww.theatrecrafts.com%2Fpages%2Fhome%2Fglossary-of-technical-theatre-terms%2Ftrap-doors-stage%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3ATrapdoor" class="Z3988"></span></span> </li> <li id="cite_note-filmsite1963-7"><span class="mw-cite-backlink"><b><a href="#cite_ref-filmsite1963_7-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://www.filmsite.org/char.html">"Charade (1963)"</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Charade+%281963%29&rft_id=https%3A%2F%2Fwww.filmsite.org%2Fchar.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3ATrapdoor" class="Z3988"></span></span> </li> <li id="cite_note-8"><span class="mw-cite-backlink"><b><a href="#cite_ref-8">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFClassen2016" class="citation book cs1">Classen, Albrecht (11 April 2016). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=s3P9CwAAQBAJ"><i>Death in the Middle Ages and Early Modern Times: The Material and Spiritual Conditions of the Culture of Death</i></a>. Walter de Gruyter GmbH & Co KG. p. 512. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-3-11-043697-6" title="Special:BookSources/978-3-11-043697-6"><bdi>978-3-11-043697-6</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Death+in+the+Middle+Ages+and+Early+Modern+Times%3A+The+Material+and+Spiritual+Conditions+of+the+Culture+of+Death&rft.pages=512&rft.pub=Walter+de+Gruyter+GmbH+%26+Co+KG&rft.date=2016-04-11&rft.isbn=978-3-11-043697-6&rft.aulast=Classen&rft.aufirst=Albrecht&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3Ds3P9CwAAQBAJ&rfr_id=info%3Asid%2Fen.wikipedia.org%3ATrapdoor" class="Z3988"></span></span> </li> <li id="cite_note-9"><span class="mw-cite-backlink"><b><a href="#cite_ref-9">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFWinkler" class="citation web cs1">Winkler, Anita. <a rel="nofollow" class="external text" href="https://www.habsburger.net/de/kapitel/wiederverwertung-bis-zum-tod">"Wiederverwertung bis zum Tod"</a>. <i>Die Welt der Habsburger</i>. Schönbrunn Group of museums<span class="reference-accessdate">. Retrieved <span class="nowrap">15 July</span> 2021</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Die+Welt+der+Habsburger&rft.atitle=Wiederverwertung+bis+zum+Tod&rft.aulast=Winkler&rft.aufirst=Anita&rft_id=https%3A%2F%2Fwww.habsburger.net%2Fde%2Fkapitel%2Fwiederverwertung-bis-zum-tod&rfr_id=info%3Asid%2Fen.wikipedia.org%3ATrapdoor" class="Z3988"></span></span> </li> <li id="cite_note-10"><span class="mw-cite-backlink"><b><a href="#cite_ref-10">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.merriam-webster.com/dictionary/trapdoor%20spider">"Trap-door Spider - Definition of trap-door spider by Merriam-Webster"</a>. <i>merriam-webster.com</i>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=merriam-webster.com&rft.atitle=Trap-door+Spider+-+Definition+of+trap-door+spider+by+Merriam-Webster&rft_id=http%3A%2F%2Fwww.merriam-webster.com%2Fdictionary%2Ftrapdoor%2520spider&rfr_id=info%3Asid%2Fen.wikipedia.org%3ATrapdoor" class="Z3988"></span></span> </li> </ol></div></div> <div class="mw-heading mw-heading2"><h2 id="External_links">External links</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Trapdoor&action=edit&section=10" title="Edit section: External links"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p><span class="noviewer" typeof="mw:File"><a href="/wiki/File:Commons-logo.svg" class="mw-file-description"><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/12px-Commons-logo.svg.png" decoding="async" width="12" height="16" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/18px-Commons-logo.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/24px-Commons-logo.svg.png 2x" data-file-width="1024" data-file-height="1376" /></a></span> Media related to <a href="https://commons.wikimedia.org/wiki/Category:Trapdoors" class="extiw" title="commons:Category:Trapdoors">Trapdoors</a> at Wikimedia Commons </p>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?type=1x1" alt="" width="1" height="1" style="border: none; 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