/ Dictionary / Index S syne: Meaning and Definition of Find definitions for: syne Pronunciation: (sīn), [key] — adv., prep., conj. Scot. and North Eng. since. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. syndrome synecdoche Related Content Daily Word Quiz: cetacean Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language