τραχὺς ἐντεῦθεν μελάμπυγός τε τοῖς ἐχθροῖς ἅπασιν → he is a tough black-arse towards his enemies, he is a veritable Heracles towards his enemies
-ου, ἡbot. grama, Cynodon dactylon (L.) Pers., PMil.Vogl.214re.1.3, 7 (II d.C.).