Arctic deer with large antlers in both sexes; called `reindeer' in Eurasia and `caribou' in North America
"During the winter migration, we spotted a herd of reindeer crossing the tundra."
Any Arctic and subarctic-dwelling deer of the species Rangifer tarandus, with a number of subspecies.
"The herd of reindeer migrated north across the tundra in search of fresh lichen as winter deepened."
The word comes from the Old Norse term hreindýri, which literally means "reindeer animal." It is formed by combining hreinn (reindeer) and dýr (animal).