Lewis & Short

Illyrĭi (archaic orthog. Ilurii, Plaut, Men. 2, 1, 10), ōrum, m., = Ἰλλύπιοι,

  1. I. a people on the Adriatic Sea, in the modern Dalmatia and Albania, Mel. 2, 2, 1; 12; Liv. 10, 2; 42, 26; 43, 9 et saep.
  2. II. Derivv.
    1. A. Illyrĭus, a, um, adj., of or belonging to the Illyrians, Illyrian: ager, Cato ap. Gell. 11, 3, 2: latro, Cic. Off. 2, 11, 40.
      Hence,
      1. 2. Subst.: Illyrĭa, ae, f., the country of Illyria, Prop. 1, 8, 2; as consisting of two parts, Roman and Grecian Illyria, also in plur.: Illyrĭae, ārum, Prop. 2, 16 (3, 8), 10.
    2. B. Illyrĭcus (Illuricus, Plaut. Trin. 4, 2, 10), a, um, adj., of or belonging to the Illyrians, Illyrian: mare, Cic. de Imp. Pomp. 12, 35: sinus, Verg. A. 1, 243: undae, Hor. C. 1, 28, 22: pix, Ov. P. 4, 14, 45: gentes, Mel. 2, 3, 11: facies hominis, Plaut. Trin. 4, 2, 10: argentum, Liv. 45, 43, 5: in Illyricis, i. e. in Illyria, Plin. 2, 103, 106, § 228.
      Subst.: Illyrĭcum, i, n., the country of Illyria, Varr. R. R. 2, 10, 9; Cic. Att. 10, 6, 3; Liv. 43, 9; Mel. 2, 3, 13; Plin. 3, 21, 25, § 139.
    3. C. Illyrĭcĭānus, a, um, adj., the same: gens, Val. ap. Treb. Claud. 14: omnes, Cod. Th. 10, 10, 26.
    4. D. Illy-ris, ĭdis, f., Illyrian: ora, Ov. Tr. 2, 225; Sil. 8, 292: Epidamnos, Luc. 2, 624.
      Subst., the country of Illyria, Ov. P. 2, 2, 79; Mel. 1, 3, 4.