/ Dictionary / Index S sleeve coupling: Meaning and Definition of Find definitions for: sleeve' cou"pling Pronunciation: [key] a cylinder joining the ends of two lengths of shafting or pipe. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. sleeveboard sleeveless Related Content Daily Word Quiz: stringent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language