Porthmeus (dissyl.), ĕi and ĕos, m., = Πορθμεύς,
the ferryman , a name given to Charon (poet.): navita Porthmeus, Petr. 121.— Acc. Porthmea, Juv. 3, 266.
porthmeus (disyl.), —, acc.ea, m , πορθμεύς, the ferryman, i. e. Charon, Iu. ...
An Elementary Latin Dictionary