κύφωσις
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)
εως, ἡ, being humpbacked, Hp.Art.41, 47 (pl.), Gal.18(1).74.
Greek (Liddell-Scott)
κύφωσις: ῡ, εως. ἡ, κύρτωσις τῆς ῥάχεως, Ἱππ. π. Ἄρθρ. 812.
