διαγνώστης
From LSJ
ταυτὶ γὰρ συκοφαντεῖσθαι τὸν Ἕκτορα ὑπὸ τοῦ Ὁμήρου → that is a false charge brought against Hector by Homer
English (LSJ)
διαγνώστου, ὁ, examining magistrate, = Lat. cognitor, Glossaria.
Spanish (DGE)
-ου, ὁ magistrado encargado de examinar las sentencias, Gloss.2.270.
German (Pape)
ὁ, der Entscheidende.