or trap door
a door flush with the surface of a floor, ceiling, or roof.
the opening that it covers.
of, relating to, or like a trapdoor.
Origin of trapdoor
Also called drop.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
a door or flap flush with and covering an opening, esp in a ceiling
the opening so covered
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012