Webster’s Revised Unabridged Dictionary · 1913
Sterlet
Ster′let (stẽr′lĕt), n. [Russ. sterliade.] (Zoöl.) A small sturgeon (Acipenser ruthenus) found in the Caspian Sea and its rivers, and highly esteemed for its flavor. The finest caviare is made from its roe.