/ Dictionary / Index S shirt-sleeve: Meaning and Definition of Find definitions for: shirt-sleeve Pronunciation: (shûrt'slēv"), [key] — adj. not wearing a jacket; informally dressed: a shirt-sleeve mob. warm enough to live or work in without wearing a jacket or coat: shirt-sleeve weather in November. simple, plain, and informal; direct and straightforward in approach, manner, etc.: shirt-sleeve diplomacy. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: shirt-sleeve (Thesaurus) shirtmaker shirttail 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