Lewis Short
Anīgrŏs (noun M) : Ἄνιγρος
* A little river in Elis, rising on Mount Lapithus, now Mauropotamo; its waters were muddy and of an unpleasant odor, Ov. M. 15, 282; cf. Mann. Greece, p. 519.
Charlton T. Lewis, Charles Short, A Latin Dictionary