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Meaning of butorphanol

bu•tor•pha•nol

Pronunciation: (by-tôr'fu-nôl", -nol"), [key]
— n. Pharm.
  1. 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.