Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
Sĭcŏris, is, m., a tributary of the Iberus, near Ilerda, in Hispania Tarraconensis, now Segre, Caes. B. C. 1, 40; 1, 48; 1, 62; Plin. 3, 3, 4, § 24; Luc. 4, 14 sq.; 4, 130; 4, 335; Aus. Ep. 25, 58.