/ Dictionary / Index N nornicotine: Meaning and Definition of Find definitions for: nor•nic•o•tine Pronunciation: (nôr-nik'u-tēn"), [key] — n. an alkaloid, CHN, extracted from tobacco and related to nicotine but having a lower toxicity: used as an agricultural and horticultural insecticide. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Norn Norodom Sihanouk Related Content Daily Word Quiz: inutiae Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language