[ bə'lu:gə ]
■ noun ( plural same or ~s )
1》 a small white toothed whale of Arctic coastal waters, related to the narwhal. [ Delphinapterus leucas .]
2》 a very large sturgeon occurring in the inland seas and rivers of central Eurasia, from which caviar is obtained. [ Huso huso .]
Origin
C16: from Russ. belukha , ~ , from belyĭ 'white'.