τραχὺς ἐντεῦθεν μελάμπυγός τε τοῖς ἐχθροῖς ἅπασιν → he is a tough black-arse towards his enemies, he is a veritable Heracles towards his enemies
undātus, a, um (unda), ondé, ondulé, onduleux : Plin. 9, 103.