/ Dictionary / Index B butorphanol: Meaning and Definition of Find definitions for: bu•tor•pha•nol Pronunciation: (by-tôr'fu-nôl", -nol"), [key] — n. Pharm. a narcotic analgesic, CHNO, administered by injection to treat moderate to severe pain. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. butlery butsu 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