/ Dictionary / Index B brassiere: Meaning and Definition of Find definitions for: bras•siere Pronunciation: (bru-zēr'), [key] — n. a woman's undergarment for supporting the breasts. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: brassiere (Thesaurus) brassie brass instrument 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