/ Dictionary / Index B biflex: Meaning and Definition of Find definitions for: bi•flex Pronunciation: (bī'fleks), [key] — adj. bent at two places. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. biflagellate bifluoride Related Content Daily Word Quiz: respite Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language