noun
also os·set·ra (ˌ)ōˈse.trə
( -s )
Etymology: modification (perhaps influenced by sevruga — herein — and beluga ) of Russian osëtr sturgeon; akin to Czech jesetr sturgeon, Serbo-Croatian jèsetra , Lithuanian ašėtras
: a golden or brownish caviar from a sturgeon of the genus Acipenser ( A. sturio ) with roe smaller than the beluga ; also : the fish — compare sevruga herein