Lewis & Short

Vŏcontii, ōrum, m., a people in Gallia Narbonensis, between the rivers Isara and Druentius, now Vaison, Caes. B. G. 1, 10; Mel. 2, 5, 2; Plin. 3, 4, 5, § 34; Liv. 21, 31, 9; Planc. ap. Cic. Fam. 10, 32, 2.
Hence, Vŏ-contĭus, a, um, adj., of or belonging to the Vocontii, Vocontian: rura, Sil. 3, 467.