/ Dictionary / Index B butsu: Meaning and Definition of Find definitions for: but•su Pronunciation: (boot's, bt'- Japn. b'tsoo), [key] — pl. -su a representation of the Buddha. (cap.) Buddha (def. 1). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. butorphanol butt Related Content Daily Word Quiz: frugal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language