Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
Ēva (Hēva, Vulg. Gen. 4, 1; id. 2 Cor. 11, 3 al.), ae, f., Eve, the first woman, Tert. Virg. vel. 5; Prud. Hamort. 741.