Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
līmitānĕus, a, um, adj. [limes], that is on the borders (late Lat.): agri limitanei, situated on the borders: milites, frontier troops, Cod. 11, 59, 3; Spart. Nigr. 7; Lampr. Alex. Sev. 58.