/ Dictionary / Index C coco: Meaning and Definition of Find definitions for: co•co Pronunciation: (kō'kō), [key] — pl. -cos. See coconut (def. 1). Co•co Pronunciation: (kō'kō Sp. kô'kô), [key] — n. a river rising in N Nicaragua and flowing NE along the Nicaragua-Honduras border to the Caribbean Sea. ab. 300 mi. (485 km) long. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: coco (Thesaurus) cocky cocoa Related Content Daily Word Quiz: eccentric Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language