Βυζάντιον
From LSJ
τίς γὰρ ἁδονᾶς ἄτερ θνατῶν βίος ποθεινὸς ἢ ποία τυραννίς; τᾶς ἄτερ οὐδὲ θεῶν ζηλωτὸς αἰών → What human life is desirable without pleasure, or what lordly power? Without it not even the life of the gods is enviable.
French (Bailly abrégé)
ου (τό) :
Byzance (Constantinople) ville de Thrace, sur le Bosphore.
Russian (Dvoretsky)
Βυζάντιον: τό Византия (город на фракийском берегу Боспора, ныне Стамбул) Her., Arst.