Lewis & Short

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Ăquĭlōnĭa, ae, f., a town of the Hirpini, upon the river Aufidus, now Lacedogna, Liv. 10, 38; 39, 41 sq.; cf. Mann. Ital. I. 797.—Ăquĭlōni, ōrum, m., its inhabitants, Plin. 3, 11, 16, § 105.

ăquĭlōnĭus, a, um, adj. [aquilo].

  1. I. Northern, northerly, of the north: quae (regio) tum est aquilonia tum australis, Cic. N. D. 2, 19, 50 B. and K.: hiems, Plin. 17, 2, 2, § 12: luna, toward the north, id. 2, 97, 99, § 215: loca, id. 27, 13, 119, § 144: Aquilonius piscis, a constellation (cf. aquilonaris), Col. 11, 2, 24 and 63; Plin. 18, 26, 65, § 237.
  2. II. (Acc. to aquilo, II.) Of or pertaining to Aquilo (as a person): proles, i.e. Calais and Zetes, Prop. 1, 20, 25; Val. Fl. 4, 462: pignora, Stat. Th. 5, 432.