/ Dictionary / Index B backfist: Meaning and Definition of Find definitions for: back•fist Pronunciation: (bak'fist"), [key] — n. a karate punch with the back of a clenched hand. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. backfire backfit 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