/ Dictionary / Index C coo: Meaning and Definition of Find definitions for: coo Pronunciation: (k), [key] — v., n. cooed, coo•ing, —v.i. to utter or imitate the soft, murmuring sound characteristic of doves. to murmur or talk fondly or amorously. —v.t. to utter by cooing. —n. a cooing sound. coo Pronunciation: (k), [key] — interj. Brit. Slang. (used to express surprise or amazement.) Co•o Pronunciation: (kô'ô), [key] — n. Italian name of COO Pronunciation: [key] chief operating officer. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: coo (Thesaurus) cony cooboo 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