κλειδοφυλακώ
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
Greek Monolingual
κλειδοφυλακῶ, -έω (Α) κλειδοφύλαξ
φυλάγω κάτι κλεισμένο με κλειδί.
