Αἰγίπλαγκτον

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

Russian (Dvoretsky)

Αἰγίπλαγκτον: ὄρος τό Эгипланкт, «Посещаемая козами гора» (гора в Мегариде) Aesch.