Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
Ămānus, i, m., = Ἀμανός, a mountain range, running from N.E. to S. W., between Syria and Cilicia, now Jawur Dagh; Ămā-nĭcae pylae, the passes of Amanus, Cic. Att. 5, 20; id. Fam. 2, 10; Plin. 5, 22, 18, § 80; Luc. 3, 244 al.