/ Dictionary / Index C copestone: Meaning and Definition of Find definitions for: cope•stone Pronunciation: (kōp'stōn"), [key] — n. the top stone of a building or other structure. a stone used for or in coping. the crown or completion; finishing touch. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: copestone (Thesaurus) copesetic Copht Related Content Daily Word Quiz: lunar Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language