trapdoor

or trap door

[ trap-dawr, -dohr ]
/ ˈtræpˈdɔr, -ˈdoʊr /

noun

a door flush with the surface of a floor, ceiling, or roof.
the opening that it covers.

adjective

of, relating to, or like a trapdoor.

Origin of trapdoor

First recorded in 1325–75, trapdoor is from the Middle English word trappe dore. See trap1, door
Also called drop.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for trap door

trap door


noun

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