Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
* bilbo, ĕre, v. n. [onomatop.], to make a noise like that of a liquid agitated in a vessel: bilbit factum est a similitudine sonitus, qui fit in vase. Naevius Bilbit amphora inquit, Paul. ex Fest. p. 34 Müll. (Com. Trag. v. 124 Rib.): bilbit βομβύζει, Gloss.