Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
2. Phĭlyra, ae, f., = Φιλύρα, a nymph, daughter of Oceanus, who bore to Saturn the Centaur Chiron, and was changed into a linden-tree, Verg. G. 3, 92; Val. Fl. 5, 153; Hyg. Fab. 138.
Hence,