Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
Phĭlŏlāus, i, m., = Φιλόλαος, a Pythagorean philosopher of Croton, a disciple of Archytas, Cic. de Or. 3, 34, 139; id. Rep. 1, 10, 16.