κοσταὶ

From LSJ

ὅπλον μέγιστόν ἐστιν ἡ ἀρετή βροτοῖς → man's greatest weapon is virtue, virtue is the greatest weapon for mortals

Source

Greek (Liddell-Scott)

κοσταὶ: ἢ κόσται, ῶν, αἱ, = ἀκοστή, κριθή, Ἡσύχ. ΙΙ. εἶδος ἰχθύων, Δίφιλ. Σίφν. παρ’ Ἀθην. 357A.