Καιναί

From LSJ

κρεῖττον εἶναι φιλοσόφως ἀποθανεῖν ἢ ἀφιλοσόφως ζῆν → that it is better to die in manner befitting a philosopher than to live unphilosophically

Source

Russian (Dvoretsky)

Καιναί: αἱ Кены (город в Месопотамии) Xen.