otter Definition

any of various largely aquatic carnivorous mammals (such as genus Lutra or Enhydra) of the weasel family that usually have webbed and clawed feet and dark brown fur

the fur or pelt of an otter

any of various Old and New World otters (especially genera Lutra and Lontra); especially : one (Lontra canadensis) of Alaska, Canada, and the conterminous U.S. found in aquatic environments from marine coastal regions to high mountains

a rare marine otter (Enhydra lutris) of the northern Pacific coasts that may attain a length of six feet (two meters), is chiefly brown but with lighter coloration on the back of the head and neck, and feeds largely on shellfish