uncle
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 > Greek (Woodhouse)
substantive
P. and V. θεῖος, ὁ (Euripides, Orestes 674; Iphigenia in Tauris 930).
Also father's brother: P. πατράδελφος, ὁ.