κώφωμα
From LSJ
Ἔοικα γοῦν τούτου γε σμικρῷ τινι αὐτῷ τούτῳ σοφώτερος εἶναι, ὅτι ἃ μὴ οἶδα οὐδὲ οἴομαι εἰδέναι → I seem, then, in just this little thing to be wiser than this man at any rate, that what I do not know I do not think I know either
English (LSJ)
ατος, τό,
A deafness, Id.Epid.5.52 (κύφ- codd.).
German (Pape)
[Seite 1548] τό, Taubheit, Hippoer.