/ Dictionary / Index S slab-sided: Meaning and Definition of Find definitions for: slab-sid•ed Pronunciation: (slab'sī"did), [key] — adj. Informal. having the sides long and flat, like slabs. tall and lank. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. slab plastering slab top Related Content Daily Word Quiz: resilient Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language