περιπολαῖος
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)
ον,
A open all round, flat, of eyes, Arist.Phgn.810a1 (Comp., nisi leg. ἐπι-, cf. foreg.).
German (Pape)
[Seite 588] von Augen, Arist. physiogn. 5.
Greek Monolingual
-ον, Α
(για μάτι) αυτός που είναι ολόγυρα ανοιχτός, ορθάνοιχτος, ή, κατ' άλλους, αυτός που στρέφεται παντού, ευκίνητος, ζωηρός.
[ΕΤΥΜΟΛ. < περίπολος + κατάλ. -αῖος (πρβλ. πηγ-αίος)].
Russian (Dvoretsky)
περιπολαῖος: вращающийся, т. е. подвижной, бегающий (ὀφθαλμοί Arst.).