A.prepared hide, piece of leather, Hdt.1.194; “ἐκ διφθερέων πεποιημέναι κυνέαι” Id.7.77; διφθέραι, opp. δέρρεις (hides), Th.2.75; of a drum, Hero Aut.20.4; esp. as writing-material, “τὰς βύβλους διφθέρας καλέουσι ἀπὸ τοῦ παλαιοῦ οἱ Ἴωνες” Hdt.5.58; “δ. μελαγγραφεῖς” E.Fr.627; δ. βασιλικαί, of Persian records, Ctes. ap. D.S.2.32; δ. ἱεραί, at Carthage, Plu.2.942c; χαλκαῖ δ., ib. 297a, cf. Sch.Il.1.175: prov., “ἀρχαιότερα τῆς διφθέρας λέγεις” Diogenian.3.2; used for bindings, διφθέρας περιβάλλειν (sc. βιβλίοις) Luc.Ind.16.
II. anything made of leather, leathern jerkin, Ar.Nu.72, Pl.Cri.53d, SIG 1259.6 (iv B. C.), Men.Epit.12, Luc. Tim.6,38, Arr.An.7.9.2, etc.; properly, of goatskin, opp. μηλωτή, Ammon.Diff.p.44 V.
2. wallet, bag, X.An.5.2.12, Lib.Or.58.5.