Lewis & Short

Mĕnaenĭus or Mĕnaenus, a, um, adj., of or from Menæ (Μέναι), a city of Sicily, now Mineo: Xenon Menaenus, Cic. Verr. 2, 3, 22, § 55.
In plur.: Mĕnaeni, ōrum, m., the inhabitants of Menæ, Cic. Verr. 2, 3, 43, § 102; also written Mĕ-nanīni, Plin. 3, 8, 14, § 91.