Clītumnus, i, m., a small river in Umbria, celebrated in ancient times, whose source received divine homage as Juppiter Clitumnus, now Clitunno or la Vene, Plin. Ep. 8, 8, 1; 8, 8, 5; Verg. G. 2, 146 Serv. et Heyne; Prop. 2 (3), 19, 25; Sil. 4, 547; 8, 453; Suet. Calig. 43.

—Hence, Clītum-nus, a, um, adj., of Clitumnus: Clitumna novalia, Stat. S. 1, 4, 128.