/ Dictionary / Index N nightlife: Meaning and Definition of Find definitions for: night•life Pronunciation: (nīt'līf"), [key] — n. the activity of people seeking nighttime diversion, as at a nightclub, theater, or the like. the entertainment available to them. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: nightlife (Thesaurus) night letter night-light Related Content Daily Word Quiz: diaphanous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language