/ Dictionary / Index B bro: Meaning and Definition of Find definitions for: bro Pronunciation: (brō, bru), [key] — pl. bros. brother. friend; pal; buddy. bro. Pronunciation: [key] — pl. bros. brother. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Brno chair broach Related Content Daily Word Quiz: secular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language