Pĕnĭus, ii, m., = Πενιός,
a river in Colchis , Ov. P. 4, 10, 47; Plin. 6, 4, 4, § 14.
PE´NIUS a small river of Colchis, falling into the Euxine, on which stood a town of the same name. (...
Dictionary of Greek and Roman Geography