Lewis & Short

Formĭae, ārum, f. [for sformiae, σϝορμιαι, from old form Ὁρμίαι, place of anchorage; cf. ὅρμος],

  1. I. a very ancient city of Latium, on the borders of Campania, the fabled seat of the Laestrygones, now Mola di Gaeta, Mel. 2, 4, 9; Plin. 3, 5, 9, § 59; Cic. Att. 2, 13, 2; id. Fam. 16, 12, 5; id. Q. Fr. 1, 1, 6, § 17; Hor. C. 3, 17, 6.
  2. II. Derivv.
    1. A. Formĭānus, a, um, adj., of or belonging to Formiae, Formian: colles, Hor. C. 1, 20, 11: saxa, Liv. 22, 16, 4: fundus P. Rutilii, Cic. N. D. 3, 35, 86: dies, spent in Formiae, Mart. 10, 30, 26.
    2. B. Subst.
      1. 1. Formĭ-ānum, i, n., a villa in Formiae: of Cicero, Cic. Att. 4, 2, 7; id. Fam. 16, 10, 1; ib. 12, 6; of C. Laelius, id. Rep. 1, 39; of Dolabella, id. Att. 15, 13, 5.
      2. 2. Formĭāni, ōrum, m., the inhabitants of Formiae, Formians, Cic. Att. 2, 14, 2.