Lewis & Short

Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.

Ăgylla, ae, f., a town in Etruria, called later Caere, now Cervetri, Verg. A. 8, 479; Plin. 3, 5, 8, § 51.
Hence, Ăgyllīni, inhabitants of Agylla, Verg. A. 12, 281.