Lewis & Short

Mĕnĕcles, is, m., = Μενεκλῆς, an Asiatic rhetorician from Alabanda, Cic. de Or. 2, 23, 95; id. Or. 69, 231.
Hence, Mĕ-nĕclĭus, a, um, adj., of or belonging to Menecles the rhetorician: Meneclium studium, Cic. Brut. 95, 326.