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trapdoor

[trap-dawr, -dohr] /ˈtræpˈdɔr, -ˈdoʊr/
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
1325-1375
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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British Dictionary definitions for trap door

trap door

noun
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 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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trap door in Technology


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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Word Value for trap

6
7
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