/ Dictionary / Index C Cauca: Meaning and Definition of Find definitions for: Cau•ca Pronunciation: (kou'kä), [key] — n. a river in W Colombia: tributary of the Magdalena. 600 mi. (965 km) long. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. cat yawl Caucasia Related Content Daily Word Quiz: arid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language