αὐτὸν κέκρουκας τὸν βατῆρα τοῦ λόγου → you have struck the very threshold of the argument, you have struck the most important and chiefmost point
μαγῆες: «οἰκονόμοι δείπνου· ἢ τὰ ἄλφιτα μάττοντες» Ἡσύχ.
