Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
† būglossa (bŭglossa, Aem. Mac. de Buglossa, 1 and 10), ae (būglossŏs, i, Plin. 25, 8, 40, § 81), f., = βούγλωσσος, oxtongue, bugloss, an herb, App. Herb. 11; Ser. Samm. 424.