/ Dictionary / Index N nightshirt: Meaning and Definition of Find definitions for: night•shirt Pronunciation: (nīt'shûrt"), [key] — n. a loose shirtlike garment reaching to the knees or lower, for wearing in bed. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: nightshirt (Thesaurus) night shift nightside Related Content Daily Word Quiz: arid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language