any of several genera of large eared seals without underfur, usu. living in colonies along the coastline of the Pacific Ocean; a sea lion.

a massive, arctic sea carnivore (Odobenus rosmarus) of the same family (Otariidae) as the eared seals, having two tusks projecting from the upper jaw, a thick mustache, a very thick hide, and a heavy layer of blubber; a walrus.