Lewis & Short

Frŭsĭno, ōnis, m.,

  1. I. a city of the Hernici, in Latium, situated on the Via Latina, now Frosinone, Liv. 27, 37; Juv. 3, 224.
  2. II. Deriv.: Frŭsĭnas, ātis, adj., of or belonging to Frusino: ager, Liv. 26, 9: fundus, in the neighborhood of Frusino, Cic. Att. 11, 4, 1; 11, 13, 4.
    In plur. subst.: Frŭsĭnātes, um, m., the inhabitants of Frusino, Liv. 10, 1; Plin. 3, 5, 9, § 64.