Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
buccellātum, i, n. [buccella], soldiers’ biscuit, Amm. 17, 8, 2; Vulcat. Gall. Avid. Cass. 5, 4; Spart. Pesc. Nig. 10, 4; Cod. Th. 7, 4, 6; 7, 5, 2.