ἔργαστρα
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)
τά,
A reward of labour, wage-cost, χλαμύδος PEdgar65.89 (iii B.C.). II name of an object belonging to an οἰνοχόη, φιάλη, etc., IG22.839.85, 1640.16, BCH32.6 (Delos, iv B.C.).