beluga /bəˈluːɡə/


I. noun

1. a small white toothed whale related to the narwhal, living in herds mainly in Arctic coastal waters. Also called white whale.

Delphinapterus leucas, family Monodontidae.
2. a very large sturgeon occurring in the inland seas and associated rivers of central Eurasia.

Huso huso, family Acipenseridae.
3. (also beluga caviar) [ mass noun] caviar obtained from the beluga sturgeon.
– origin late 16th cent. (in sense 2): from Russian belukha (sense 1), beluga (sense 2), both from belyĭ ‘white’.

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