noun, plural car·i·bous, (especially collectively) car·i·bou.
- any of several large, North American deer of the genus Rangifer, related to the reindeer of the Old World.
noun plural -bou or -bous
- a large deer, Rangifer tarandus, of Arctic regions of North America, having large branched antlers in the male and female: also occurs in Europe and Asia, where it is called a reindeerAlso called (Canadian): tuktu
- Canadian a mixed drink containing wine and grain alcohol
also cariboo, 1660s, from Canadian French caribou, from Micmac (Algonquian) kaleboo or a related Algonquian name, literally “pawer, scratcher,” from its kicking snow aside to feed on moss and grass.