/ Dictionary / Index N nonsmoker: Meaning and Definition of Find definitions for: non•smok•er Pronunciation: (non-smō'kur), [key] — n. a person who does not smoke. a railroad car, room, or area reserved for those who do not smoke. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: nonsmoker (Thesaurus) nonskid nonsmoking Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language