ἔγνω δὲ φώρ τε φῶρα καὶ λύκος λύκον → the thief knows the thief and the wolf knows the wolf, and thief knows thief and wolf his fellow wolf, set a thief to catch a thief
Use P. and V. λέβης, ὁ, P. χαλκεῖον, τό, Ar. and P. χάλκωμα, τό, Ar. χαλκίον, τό, V. χαλκός, ὁ.