Lewis & Short

Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.

Uscāna, ae, f., a town of Illyria, Liv. 43, 18 sqq.
Hence, Uscānenses, ĭum, m., the inhabitants of Uscana, Liv. 43, 18; 43, 19.