beluga

noun beluga

• mammal — any vertebrate of the class Mammalia, having the body more or less covered with hair, nourishing the young with milk from the mammary glands, and, with the exception of the egg-laying monotremes, giving birth to live young.
• whale — any of the larger marine mammals of the order Cetacea, especially as distinguished from the smaller dolphins and porpoises, having a fishlike body, forelimbs modified into flippers, and a head that is horizontally flattened.
• grampus — a cetacean, Grampus griseus, of the dolphin family, widely distributed in northern seas.
• dolphin — any of several chiefly marine, cetacean mammals of the family Delphinidae, having a fishlike body, numerous teeth, and the front of the head elongated into a beaklike projection.
• porpoise — any of several small, gregarious cetaceans of the genus Phocoena, usually blackish above and paler beneath, and having a blunt, rounded snout, especially the common porpoise, P. phocoena, of both the North Atlantic and Pacific.