trap door

trapdoor

[trap-dawr, -dohr]
noun
1.
a door flush with the surface of a floor, ceiling, or roof.
2.
the opening that it covers.
adjective
3.
of, pertaining to, or like a trapdoor.
Also, trap door.


Origin:
1325–75; Middle English trappe dore. See trap1, door

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Collins
World English Dictionary
trap door
 
n
1.  a door or flap flush with and covering an opening, esp in a ceiling
2.  the opening so covered

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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FOLDOC
Computing Dictionary

trap door definition


Or "trapdoor" 1. back door.
2. trap-door function

The Free On-line Dictionary of Computing, © Denis Howe 2010 http://foldoc.org
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