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.

Pupinius, a, um, adj., Pupinian: ager, Cic. Agr. 2, 35, 96: Pupinia tribus ab agro Pupinio, Paul. ex Fest. p. 232 Müll. (Fest. ib. 233, preserved only in a fragm. form).
Also, Pupiniensis, e, adj.: ager, Liv. 9, 41, 10.
Hence, subst.: Pupinĭa, ae, f. (regio), the Pupinian territory in Latium, a sterile tract of country in the vicinity of Rome, Liv. 26, 9 fin.; Varr. R. R. 1, 9, 5; Col. 1, 4, 2; Val. Max. 4, 4, 4.