/ Dictionary / Index B backflap hinge: Meaning and Definition of Find definitions for: back'flap hinge" Pronunciation: (bak'flap"), [key] flap (def. 20a). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. backfit backflash Related Content Daily Word Quiz: profiterole Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language