αὐτὸν κέκρουκας τὸν βατῆρα τοῦ λόγου → you have struck the very threshold of the argument, you have struck the most important and chiefmost point
subs.
Bail: P. and V. ἐγγύη, ἡ.
A person acting as surety: Ar. and P. ἐγγυητής, ὁ.
Pledge: P. and V. πίστις, ἡ, πιστόν, τό, or pl., V. πιστώματα, τά.
Give surety offer bail, v.: Ar. and P. ἐγγυᾶσθαι, P. κατεγγυᾶσθαι.
