Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
Appias, ădis, f. [Appius]. 
- I.  An epithet of the nympi at the fountain of Aqua Appia (v. Applus), whose waters gushed forth near the temple of Venus: Non illas lites Appias ipsa probat, Ov. R. Am. 660; id. A. A. 1, 82.
Hence, transf., to her statues, found at the neighboring temple of Venus: Appiadesque deae, Ov. A. A. 3, 452. 
- II.  An epithet of Minerva, given by Cicero jestingly, to flatter Appius Pulcher, in imitation of the appellative Pallas, Cic. Fam. 3, 1 Manut.