n. (pl. same or reindeers) a subarctic deer, Rangifer tarandus, of which both sexes have large antlers, used domestically for drawing sledges and as a source of milk, flesh, and hide. Phrases and idioms:
reindeer moss an arctic lichen, Cladonia rangiferina, with short branched stems growing in clumps. Etymology: ME f. ON hreind|ri f. hreinn reindeer + d|r DEER