Lewis & Short

Ĭassus or Ĭāsus, i, f., = Ἰασσός or Ἰᾶσός,

  1. I. an ancient and wealthy town on the coast of Caria, now Askem or Asyn Kalessi, Plin. 5, 29, 29, § 107; 9, 8, 8, § 27; Liv. 32, 33; 33, 30; 37, 17.
  2. II. Derivv.
    1. A. Ĭassĭus or Ĭāsĭus, a, um, adj., of or belonging to Iassus, Iassian: sinus. Mel. 1, 16 fin.; Plin. 5, 29, 29, § 107.
    2. B. Ĭas-senses, ĭum, m., the inhabitants of Iassus, Iassians, Liv. 37, 17.