ἀδαξησμός
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, = ὀδαξησμός (itching), Erot.Fr.30.
Spanish (DGE)
-ου, ὁ irritación, picazón Erot.Fr.30, cf. ὀδαξησμός.