A.= ἐπίπλους, caul or membrane which conlains the bowels, “χολάδας δέρτροισι καλύψεις” Antim.45, cf. Hp.Epid.5.26; γῦπε . . δέρτρον ἔσω δύνοντες even to the bowels, Od.11.579.
II. in Od. l.c., δέρτρον is expld. by Gramm., as EM257.31, etc., of the vulture's beak: hence, of a sharp point, Lyc.880.
III. pl., = τύμπανα, Hsch.