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Meaning of trapdoor

trap•door

Pronunciation: (trap'dôr', -dōr'), [key]
— n.
  1. a door flush with the surface of a floor, ceiling, or roof.
  2. the opening that it covers.
—adj.
  1. of, pertaining to, or like a trapdoor.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.