/ Dictionary / Index C closed couplet: Meaning and Definition of Find definitions for: closed' cou'plet Pronunciation: [key] a couplet that concludes with an end-stopped line. Cf. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. closed corporation closed-door Related Content Daily Word Quiz: loathe Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language