/ Dictionary / Index S shirt jacket: Meaning and Definition of Find definitions for: shirt' jack"et Pronunciation: (shûrt'jak"), [key] a shirtlike jacket. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. shirting shirtmaker Related Content Daily Word Quiz: mamba Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language