νομοδίφας
From LSJ
γραμματική ἐστιν ἐμπειρία τῶν παρὰ ποιηταῖς τε καὶ συγγραφεῦσιν ὡς ἐπὶ τὸ πολὺ λεγομένων → grammar is a practical knowledge of the usage of poets and writers of prose
English (LSJ)
[ῑ], ου, ὁ, searcher into law, Gloss.
Greek (Liddell-Scott)
νομοδίφας: [ῑ,], ου, ὁ, ὁ ἐρευνῶν τὸν νόμον, Γλωσσ.