Phlegethon

·add. ·noun One of the principal rivers of Hades, in the channel of which fire flowed instead of water.

Phlegethon
Phlĕgĕthon, ontis, m., = Φλεγέθων (burning, blazing), I a river in the Lower World , which ran with...

A New Latin Dictionary by Charlton T. Lewis Ph.D. and Charles Short, LL. D.
Phlegethon
Phlegethōn ontis, m , Φλεγέθων, a river of fire in the Lower World, V. ...

An Elementary Latin Dictionary