Definition of "reindeer" in English

noun

1. (plural: reindeer) Any Arctic and subarctic-dwelling deer of the species Rangifer tarandus, with a number of subspecies.

   • Santa Claus' sleigh is supposedly pulled by eight reindeer

2. (plural: reindeers, biology) Any species, subspecies, ecotype, or other scientific grouping of such animals.

verb

1. To herd or farm reindeer