/ Dictionary / Index B back door: Meaning and Definition of Find definitions for: back' door' Pronunciation: [key] a door at the rear of a house, building, etc. a secret, furtive, or illicit method, manner, or means. back•door Pronunciation: (bak'dôr', -dōr'), [key] — adj. secret; furtive; illicit; indirect. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: backdoor (Thesaurus) back dive backdoor play Related Content Daily Word Quiz: opulent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language