Lewis & Short

Engŭĭon (also written Engyon), i, n., = Ἐγγύιον,

  1. I. a city in the interior of Sicily, now Gangi Vetere, Sil. 14, 249.
  2. II. Deriv.: Engŭīnus, a, um, adj., of Enguion: civitas, Cic. Verr. 2, 3, 43, § 193; and Enguīni, ōrum, m., its inhabitants, Cic. Verr. 2, 4, 44; 2, 5, 72; Plin. 3, 8, 14, § 91.