Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
Adŭātŭca, ae, f. in the Tab. Peuting, Aduaca, a fortress in the country of the Eburones, the Netherlands, between Maestricht and Louvain, now Tongres, Caes. B. G. 6, 32.