Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
bāro, ōnis m. [kindr with bardus, q. v.; cf. also Varro, varo], a simpleton, blockhead, dunce (four times in Cicero, elsewhere rare): haec cum loqueris, nos barones stupemus, tu videlicet tecum ipse rides, Cic. Fin. 2, 23, 76; so id. Div. 2, 70, 144; id. Fam. 9, 26, 3; id. Att. 5, 11, 6; Pers. 5, 138; Petr. 53, 11; 63, 7.