Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
sĭgillātus, a, um, adj. [sigilla], furnished or adorned with little images or figures: scyphi, Cic. Verr. 2, 4, 14, § 32: putealia, id. Att. 1, 10, 3: tentoria, Treb. XXX. Tyr. 16: serica, Cod. Th. 15, 7, 11: sal, the pillar of salt into which Lot’s wife was changed, Prud. Ham. 707.