/ Dictionary / Index T trapdoor: Meaning and Definition of Find definitions for: trap•door Pronunciation: (trap'dôr', -dōr'), [key] — n. a door flush with the surface of a floor, ceiling, or roof. the opening that it covers. —adj. of, pertaining to, or like a trapdoor. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. trap cut trapdoor function, Related Content Daily Word Quiz: heifer Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language