/ Dictionary / Index B briar: Meaning and Definition of Find definitions for: bri•ar Pronunciation: (brī'ur), [key] — n. brier. bri•ar Pronunciation: (brī'ur), [key] — n. brier. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: briar (Thesaurus) Briand Briard 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