Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
Căbillōnum, i, n., = Καβυλλῖνον, a considerable town of. the Ædui in Gallia Lugdunensis, now Chalons sur Saōne, Caes. B. G. 7, 42; 7, 90.
Hence, Căbillōnen-sis, e, adj., of or belonging to Cabillonum: portus, Eum. Pan. Const. 18.