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
ērŏgātōrĭus: a, um, adj. id.,
I of or for distributing (water): modulus, Front. Aquaed. 34.
ērŏgātōrĭus, a, um (erogo), qui sert à distribuer, de distribution : Frontin. Aqu. 34.