Variant: also os · set · ra
Pronunciation: ( ˌ ) ō - ' se-tr ə
Function: noun
Etymology: modification of Russian osëtr sturgeon
Date: 1955
: a golden or brownish caviar from a sturgeon (as Acipenser gueldenstaedtii of the Caspian Sea) with roe somewhat smaller than the beluga and having a usually nutty flavor also : the fish ― compare SEVRUGA