/ Dictionary / Index N nalbuphine: Meaning and Definition of Find definitions for: nal•bu•phine Pronunciation: (nal'by-fēn"), [key] — n. Pharm. a potent synthetic narcotic, CHNO, used as an analgesic for moderate to severe pain. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Nakhon Sawan Nalchik Related Content Daily Word Quiz: banshee Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language