Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
bĭbōsus, a, um, adj. [1. bibo], given to drinking, fond of drink, Laber. ap. Gell. 3, 12, 4; besides only in Nigidius, acc. to Gell. 3, 12, 1.