τραχὺς ἐντεῦθεν μελάμπυγός τε τοῖς ἐχθροῖς ἅπασιν → he is a tough black-arse towards his enemies, he is a veritable Heracles towards his enemies
πέτρος, χερμάς, λιθάς, λαιά, λᾶας, λᾶς, λίθος, λίθαξ