Breadcrumb Home > Dictionary > Index B brio: Meaning and Definition of Find definitions for: bri•o Pronunciation: (brē'ōIt.brē'ô), [key] — n. vigor; vivacity. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: brio (Thesaurus) briny brioche ✖ Related Content Daily Word Quiz: musth Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language