Definition of sturgeon noun from the Oxford Advanced American Dictionary

 

sturgeon

 noun
noun
NAmE//ˈstərdʒən//
 
(pl. sturgeon or sturgeons)[countable, uncountable]
 
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a large sea and freshwater fish that lives in northern regions. Sturgeon are used for food and the eggs (calledcaviar) are also eaten.
See the Oxford Advanced Learner's Dictionary entry: sturgeon