Be-lū'gă, n.

n. [Russ. bieluga, a sort of large sturgeon, prop. signifying white fish, from bielni, white.] (Ichth.) A fish of the cetaceous order and dolphin family, from 12 to 18 feet in length.

The northern beluga (Beluga catodon) is the white whale and white fish of the whalers; it inhabits the northern seas, is of a white color, and affords oil of a good quality. Baird.