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.

Sūtrĭum, ii, n., an ancient town in Etruria, now Sutri, Liv. 6, 3, 2; 6, 9; 6, 32; Vell. 1, 14.
Prov.: quasi eant Sutrium, i. e. to set about any thing well prepared (as Camillus, when he marched to the conquest of Sutrium), Plaut. Cas. 3, 1, 10; cf. Fest. p. 310 Müll.
Hence,

  1. A. Sūtrīnus, a, um, adj., of or belonging to Sutrium: ager, Liv. 26, 34: colonia, Plin. 3, 5, 8, § 51.
    Subst.: Sūtrīni, ōrum, m., the inhabitants of Sutrium, Liv. 6, 3.
  2. B. Sūtrĭus, a, um, adj., of Sutrium: tecta, Sil. 8, 493.