(n.) A very large marine mammal (Trichecus rosmarus) of the Seal family, native of the Arctic Ocean. The male has long and powerful tusks descending from the upper jaw. It uses these in procuring food and in fighting. It is hunted for its oil, ivory, and skin. It feeds largely on mollusks. Called also morse.
Thesaurus Entries
Loch Ness monster, alevin, benthon, benthos, cetacean, crustacean, dolphin, dugong, fingerling, fish, fry, game fish, grilse, harbor seal, kipper, man-eater, man-eating shark, manatee, minnow, minny, nekton, octopus, panfish, plankton, porpoise, salmon, sea dog, sea lion, sea monster, sea pig, sea serpent, sea snake, sea urchin, seal, shark, shellfish, smolt, sponge, squid, tropical fish, walrus, whale
