/ Dictionary / Index C cassock: Meaning and Definition of Find definitions for: cas•sock Pronunciation: (kas'uk), [key] — n. a long, close-fitting garment worn by members of the clergy or others participating in church services. a lightweight, double-breasted ecclesiastical coat or jacket, worn under the Geneva gown. a member of the clergy. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: cassock (Thesaurus) Cassius Longinus cassolette Related Content Daily Word Quiz: profiterole Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language