See Also: trapdoor(dictionary)
trapdoor(dictionary)
Trapdoor(medicine)
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medicine(encyclopedia)
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medicine(dictionary)

Trapdoor (medicine)


trapdoor


1. A lifting or sliding door covering an opening in a roof or floor.

2. <chemical> A door in a level for regulating the ventilating current; called also weather door.

<zoology> Trapdoor spider, any one of several species of large spiders which make a nest consisting of a vertical hole in the earth, lined with a hinged lid, like a trapdoor. most of the species belong to the genus Cteniza, as the California species (C. Californica).

Source: Websters Dictionary