/ Dictionary / Index C coistrel: Meaning and Definition of Find definitions for: cois•trel Pronunciation: (koi'strul), [key] — n. Archaic. a scoundrel; knave. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. coir coital exanthema Related Content Daily Word Quiz: reiterate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language