πτέρωσις
From LSJ
Τὸ νικᾶν αὐτὸν αὑτὸν πασῶν νικῶν πρώτη τε καὶ ἀρίστη. Τὸ δὲ ἡττᾶσθαι αὐτὸν ὑφ' ἑαυτοῦ πάντων αἴσχιστόν τε ἅμα καὶ κάκιστον. → Τo conquer yourself is the first and best victory of all, while to be conquered by yourself is of all the most shameful as well as evil
English (LSJ)
εως, ἡ,
A plumage, Ar.Av.94,97; ἀπολαμβάνειν τὴν π., opp. πτερορρυεῖν, Arist. HA564b2, cf. 601b6, PA642b24. 2 feathering of arrows, Aen. Tact.31.27. 3 pl., names of parts of surgical machines, Orib. 49.4.9, al. II metaph., λόγων πτέρωσις (cf. πτερόεις 11) Jul.Ep. 193.
