Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
bucco, ōnis, m. amplif. [bucca, one who has distended cheeks], a babbler, blockhead, fool (very rare): bucco = garrulus, quod ceteros oris loquacitate, non sensu exsuperat, Isid. Orig. 10, 30: stulti, stolidi, fatui, fungi, bardi, blenni, buccones, Plaut. Bacch. 5, 1, 2: macci et buccones, App. Mag. p. 325, 30.