Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
armillātus, a, um, Part. [armilla], ornamented with a bracelet: armillatum in publicum procedere, Suet. Calig. 52: armillata et phalerata turba, id. Ner. 30; so, armillati colla Molossa canes, i. e. wearing on their necks the bracelets of their mistresses, Prop. 5, 8, 24.