Yenisei n 1: a Russian river in Siberia; rises in mountains near the Mongolian border and flows generally northward into the Kara Sea [syn: {Yenisei River}, {Yenisey}, {Yenisey River}] 2: the Uralic language spoken by the Yeniseian people [syn: {Enets}, {Entsi}, {Entsy}, {Yenisei-Samoyed}, {Yeniseian}]