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.

Ănagnĭa, ae, f., = Ἀναγνία, a town in Latium, the chief seat of the Hernici, now Anagni, Cic. Att. 16, 8, 1; Liv. 45, 16; Plin. 34, 6, 11, § 23; cf. Mann. Ital. 1, 665.
Hence, Ănagnīnus, a, um, belonging to Anagnia, Cic. Dom. 30.
Subst.: Ănagnīnum, i, n., an estate near Anagnia, Cic. Att. 12, 1.
Plur.: Ănagnīni, ōrum, m., its inhabitants, Cic. Phil. 2, 41; Plin. 3, 5, 9, § 63.