Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
1. Axĭus, ii, m., a Roman nomen: Q. Axius, a friend of Cicero’s and Varro’s, Cic. Att. 1, 12, 1; Varr. R. R. 3, 2, 1; Suet. Caes. 9; Gell. 7, 3, 10.
2. Axĭus, ii, m., = Ἄξιος, a river in Macedonia, now the Vardar, Liv. 39, 53, 15; 44, 26, 7 and 8; 45, 29, 7 sq.; cf. Mel. 2, 3, 1; Plin. 4, 10, 17, § 34.