/ Dictionary / Index S slickenside: Meaning and Definition of Find definitions for: slick•en•side Pronunciation: (slik'un-sīd"), [key] — n. Geol. a rock surface that has become more or less polished and striated by slippage along a fault plane. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. slick slicker Related Content Daily Word Quiz: procrastinate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language