Trap"door`(?), n. 1. (Arch.) A lifting or sliding door covering an opening in a roof or floor.
(Mining) A door in a level for regulating the ventilating current; -- called also
(Zol.), 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 (Cteniza Californica).
New - Add Dictionary Search to Your Site
Mon 10th December 2018