noun
1. : a rare large marine otter ( Enhydra lutris ) of the northern Pacific coasts that attains a maximum length of nearly six feet, has short legs, a blunt cylindrical tail, and large webbed hind feet, feeds largely on shellfish which it crushes with its broad flat-crowned molars, and produces a pelt which furnishes an extremely valuable fur and consists of rich dark brown underfur with an outer coat of gray-tipped coarser hairs
2. : the fur or pelt of the sea otter