/ Dictionary / Index S slab track: Meaning and Definition of Find definitions for: slab' track" Pronunciation: [key] a railroad track in which the rails are attached to and supported by a bed or slab, usually of concrete. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. slab top slack Related Content Daily Word Quiz: secular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language