ἐπικάλυμμα

A. cover, veil, πλοῦτος πολλῶν ἐ. ἐστιν κακῶν Men. 90.

II. . in animals, covering of any orifice, of the gills of fish, Arist. HA 505a1, PA 696b3; of the opercula of crabs and other crustacea, Id. HA 527b26, 541b26, cf. 530a21.