γλύμμα
From LSJ
Ἓν οἶδα, ὅτι οὐδὲν οἶδα → I know only one thing, that I know nothing | all I know is that I know nothing.
English (LSJ)
ατος, τό, (γλύφω)
A engraved figure, signet, Eup.406, Str. 14.1.16, BGU86.45 (ii A. D.); inscription, AP11.38 (Polemo Rex), Gal.12.773.
Greek (Liddell-Scott)
γλύμμα: τό, (γλύφω) εἰκὼν γεγλυμμένη, Εὔπολ. ἐν Ἀδήλ. 113, Συλλ. Ἐπιγρ. 7298.