/ Dictionary / Index B bicuspid: Meaning and Definition of Find definitions for: bi•cus•pid Pronunciation: (bī-kus'pid), [key] — adj. having or terminating in two cusps or points, as certain teeth. —n. premolar (def. 4). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: bicuspid (Thesaurus) biculturalism bicuspid valve 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