Lewis Short
(adjective) : Augustānus (Augustīānus, Suet Ner 25; Front. Col. pp. 1, 106, 139 Goes.: Augustānĕus, Auct. Limit. p. 265 Goes.), a, um, Augustus.
* Of or pertaining to Augustus: colonia,Dig. 50, 15, 1: DOMVS,Inscr. Orell. 2350 and 2947.
* Of or belonging to an emperor, imperial: Augustani,Roman knights appointed by Nero,Tac. A. 14, 15; Suet. Ner. 25.
* Augustāni, ōrum, m., the inhabitants of cities which had the title Augusta, Plin. 3, 3, 4, § 23 al.
Charlton T. Lewis, Charles Short, A Latin Dictionary