vitiligo
From LSJ
τραχὺς ἐντεῦθεν μελάμπυγός τε τοῖς ἐχθροῖς ἅπασιν → he is a tough black-arse towards his enemies, he is a veritable Heracles towards his enemies
Latin > English (Lewis & Short)
vĭtĭlīgo: ĭnis, f. vitium,
I a kind of cutaneous eruption, tetter, Cels. 5, 28, 19; Lucil. ap. Fest. p. 369 Müll.; Plin. 20, 15, 59, § 165; 21, 19, 75, § 129; 22, 25, 74, § 156; Just. 36, 2, 12; App. Mag. p. 306, 14.
Latin > French (Gaffiot 2016)
vĭtĭlīgō, ĭnis, f. (vitium), tache blanche sur la peau [ Fest. 369 ] ; dartre : Cels. Med. 5, 28, 19 ; Plin. 20, 165 ; 21, 129.