Ătū̆rus (on account of the length of the
u , sometimes written Aturrus; cf. Arabia; once ŭ , Luc. 1, 420), i, m., = Ἀτούριος, a river in Aquitania , now Adour , Aus. Parent. 4, 11; id. Mos. 468; cf. Mann. Gall. p. 116.
A´TURUS(Adour), as Lucan (Luc. 1.420) names it, or ATURRUS (Auson. Mosell. 5.467), a river of Aquita...
Dictionary of Greek and Roman Geography