Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
taxillus, i, m. [acc. to Cic. Or. 45, 153, the primitive whence talus], a small die, Pompon. ap. Prisc. p. 615 P. (Com. Fragm. v. 190 Rib.); Vitr. 10, 8, 2.