αὐτὸν κέκρουκας τὸν βατῆρα τοῦ λόγου → you have struck the very threshold of the argument, you have struck the most important and chiefmost point
μενεδήιος: -ον, ὁ τηρῶν ἐν τῇ μάχῃ τὴν θέσιν του ἐναντίον τοῦ ἐχθροῦ, κερτερικός, γενναῖος, ἀνδρεῖος, Ἰλ. Μ. 247, Ν. 228· Δωρ. -δάϊος, Ἀνθ. Π. 7. 208.