τραχὺς ἐντεῦθεν μελάμπυγός τε τοῖς ἐχθροῖς ἅπασιν → he is a tough black-arse towards his enemies, he is a veritable Heracles towards his enemies
sīlānus: i, m., = σιληνός, Doric σιλανός,
I a fountain or jet of water (usually spirting from a head of Silenus). Lucr. 6, 1265; Cels. 3, 18 med.; Fest. s. v. tullios, p. 352 Müll.; Inscr. Orell. 3321; Hyg. Fab. 169.