- [countable]
a type of small whale 白鲸 - [countable]
a type of large fish that lives in rivers and lakes in eastern Europe 欧洲鳇，欧鳇（大型鲟鱼） - (also beluga caviar)[uncountable]
a type of caviar (= fish eggs), from a beluga 鲟鱼鱼子酱
Word Originlate 16th cent. (in senses (2) and (3)): from Russian belukha (sense (1)), beluga (senses (2) and (3)), both from belyĭ ‘white’.