Breadcrumb Home > Dictionary > Index C caribou: Meaning and Definition of Find definitions for: car•i•bou Pronunciation: (kar'u-b"), [key] — pl. -bous, -bou. any of several large, North American deer of the genus Rangifer, related to the reindeer of the Old World. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: caribou (Thesaurus) Cariboo Mountains caricature ✖ Related Content Daily Word Quiz: donnybrook Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language