Lewis & Short

Spōlētĭum (afterwards called also Spōlētum; cf. Prisc. p. 592 P.; but whether so as early as the class. period is doubtful, owing to the uncertainty of the readings in the MSS. of Livy, Suetonius, and Florus; cf. Duk. ad Flor. 3, 21, 27), ii, n., a city of Umbria, now Spoleto, Liv. 22, 9; 24, 10; 45, 43; id. Epit. 20; Vell. 1, 14 fin.; Flor. 3, 21, 27; Suet. Vesp. 1; id. Gram. 21; Aur. Vict. Ep. 31.
Hence,

  1. A. Spōlē-tīnus, a um, adj., of or belonging to Spoletium: populus, Cic. Balb. 21, 48: Spoletinus T. Matrinius, id. ib. 21, 48; so, P. Cominius Spoletinus, id. Brut. 78, 271: lagenae, i. e. wine of Spoletium (of excellent quality), Mart. 13, 120; cf. absol.: Spoletina bibis, Spoletian wine, id. 14, 116.
    Subst.: Spō-lētīni, ōrum, m., the inhabitants of Spoletium, Liv. 27, 10; 45, 43 fin.; Plin. 3, 14, 19, § 114.—‡
  2. B. Spōlētānus, a, um, adj., of Spoletium, acc. to Prisc. p. 592 P.