BELUGA

noun see: bald Date: 1772 a large white sturgeon ( Huso huso syn. Acipenser huso ) of the Black Sea, Caspian Sea, and their tributaries, a toothed whale ( Delphinapterus leucas ) of arctic and subarctic waters having a fusiform body that is about 10 to 15 feet (3.0 to 5.0 meters) long and white when mature