αὐτὸν κέκρουκας τὸν βατῆρα τοῦ λόγου → you have struck the very threshold of the argument, you have struck the most important and chiefmost point
P. φορεῖον, τό.
I came home in a sedan: P. φοράδην ἦλθον οἰκάδε (Dem. 1263).