κυσός
From LSJ
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)
ὁ,
A = κύσθος, 1, Hsch. II = πυγή, Id. III = κύστις, Herod.2.44, Lyr.Adesp.25. [ῡ Herod.l.c., prob. in Call.Iamb.1.159; ῠ dub. in Lyr.Adesp. l.c.; κῦσος Theognost.Can.72.]
German (Pape)
[Seite 1538] ὁ, = κύσθος, von VLL. πυγή u. γυναικεῖον αἰδοῖον erkl. Es hängt mit κύω zusammen. Vgl. κύσθος, κύστις, κύτος, κύσσαρος.