Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
Bōla, ae (in Liv. 4, 49, 6 sq. Bōlae, ārum), f., = Βῶλα, a very ancient town of the Æqui, in Latium, now Poli, Verg. A. 6, 775.
Hence, Bōlānus, a, um, adj., of or pertaining to Bola: ager, Liv. 4, 49, 11.
And Bōlāni, ōrum, m., the inhabitants of Bola, Liv. 4, 49, 3; Plin. 3, 5, 9, § 69.