ἐπίπτυγμα
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, (ἐπιπτύσσω)
A over-fold, flap, such as covers the orifices in animals, operculum, Arist.PA679b18,HA526b29,528b7: pl., opercula, of crustaceans, Id.Resp.477a4.
German (Pape)
[Seite 973] τό, das Darübergefaltete, der Deckel, bei Arist. H. A. 4, 2 von Schaalthieren, vgl. 4, 5; Schneckengehäuse; der Schwanz des Meerkrebses, sonst ἐπικάλυμμα.