ἔρυγμα
From LSJ
αὐτὸν κέκρουκας τὸν βατῆρα τοῦ λόγου → you have struck the very threshold of the argument, you have struck the most important and chiefmost point
English (LSJ)
ατος, τό,
A = ἐρυγή 1, Hp.Morb.2.66.
German (Pape)
[Seite 1035] τό, = ἐρυγή, Hippocr.
Greek (Liddell-Scott)
ἔρυγμα: τό, = τῷ προηγ., Ἱππ. 484. 28.