/ Dictionary / Index B buccinator: Meaning and Definition of Find definitions for: buc•ci•na•tor Pronunciation: (buk'su-nā"tur), [key] — n. Anat. a thin, flat muscle lining the cheek, the action of which contracts and compresses the cheek. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. bucchero bucco- Related Content Daily Word Quiz: careening Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language