Lewis & Short

Ausētānus, a, um, adj., of or pertaining to the city Ausa, in Hispania Tarraconensis: ager, Liv. 29, 2, 2.
Hence, Ausē-tāni, ōrum, m., the Ausetani, Caes B. C. 1, 60; Liv. 21, 23, 2; 21, 61, 8; Plin. 3, 3, 4, § 22; cf. Mann. Hispan. p. 404.