/ Dictionary / Index C cellar sash: Meaning and Definition of Find definitions for: cel'lar sash" Pronunciation: [key] a window sash of relatively small size, having two or three panes horizontally arranged. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. cellarmaster cell biology Related Content Daily Word Quiz: hedonist Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language