ἐπόγδοος
οὐκ ἂν λάβοις παρὰ τοῦ μὴ ἔχοντος → you can't take from one who doesn't have, you can't squeeze blood out of a turnip, you can't get blood out of a turnip, you can't get blood from a stone, you can't get blood out of a stone
English (LSJ)
ον, 1 1/8, Pl.Ti.36a, 36b ; ἐ. λόγος the ratio
A of 9 : 8, Plu.2.367f; ἐ. [τόκος] interest at the rate of 1/8 of the principal, i.e. 12 1/2%, D.50.17 : neut. as Subst., whole tone in Music, Philol.6, Hsch.
German (Pape)
[Seite 1006] das Ganze u. den achten Theil davon, 11/8 enthaltend, Plat. Tim. 36 b; τόκος, wenn die Zinsen den achten Theil des Kapitals betragen, Dem. 50, 17; λόγος, das Verhältniß 8: 9, Plut. de procr. anim. Tim. 12. Vgl. ἐπίτριτος.
Greek (Liddell-Scott)
ἐπόγδοος: -ον, Λατ. sesquioctavus, 1+¹/8, Πλάτ. Τίμ. 36Α, Β: ― ἐπ. λόγος, ὁ λόγος τοῦ 8/9, Πλούτ. 2. 367F· ἐπ. τόκος, τόκος ἀναβαίνων εἰς τὸ ¹/8 τοῦ κεφαλαίου, δηλ. 121/2 ἐπὶ τοῖς ἐκατόν, Δημ. 1212. 2. ― Πρβλ. ἐπίτριτος. ― Καθ᾿ Ἡσύχ. «ἐπόγδοον· τόνος μουσικός».