/ Dictionary / Index S slate blue: Meaning and Definition of Find definitions for: slate' blue' Pronunciation: [key] a moderate to dark grayish blue. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. slate slate-colored junco Related Content Daily Word Quiz: endear Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language