/ Dictionary / Index N nightfall: Meaning and Definition of Find definitions for: night•fall Pronunciation: (nīt'fôl"), [key] — n. the coming of night; the end of daylight; dusk. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: nightfall (Thesaurus) night editor nightglow Related Content Daily Word Quiz: belligerent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language