reindeer Definition

caribou —used especially for one of the Old World

a large gregarious deer (Rangifer tarandus) of Holarctic taiga and tundra that usually has palmate antlers in both sexes —used especially for one of the New World—called also reindeer

a gray, erect, tufted, and much-branched lichen (Cladonia rangiferina) that forms extensive patches in arctic and north-temperate regions, constitutes a large part of the food of caribou, and is sometimes eaten by humans —called also reindeer lichen

lake in Canada on the Manitoba—Saskatchewan border area about 2500 square miles (6475 square kilometers)