αὐτὸν κέκρουκας τὸν βατῆρα τοῦ λόγου → you have struck the very threshold of the argument, you have struck the most important and chiefmost point
pf. Pass. poét. de ἕννυμι.
ἕσμαι: Hom. pf. pass. к ἕννυμι.
