ἐκκόπτειν

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

Source

Greek > English (Woodhouse Verbs Reversed)

(see also ἐκκόπτω): cut down, knock out

Lexicon Thucydideum

excidere, to be lost, 6.99.3.