Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
Vĕnĕti (Hĕnĕti), ōrum, m. 
- I.  A people in Gallia Togata, in the mod. Venetian territory, Mel. 2, 4, 2; Plin. 3, 19, 23, § 130; 6, 2, 2, § 5; Liv. 1, 1; Just. 20, 1, 8; Luc. 4, 134; Sil. 8, 606 al.
Hence,  
- 1.  Vĕnĕtus, a, um, adj. 
 
- a.  Of or belonging to the Veneti, Venetian: terrae, Mart. 13, 88, 1: Eridanus, Prop. 1, 12, 4: Mantua, Sid. poët. Ep. 9, 15 fin.; hence also, Vergilius, Macr. S. 5, 2.
 
- b.  (Perh. taken from the color of the sea on the coast.) Sea-colored, bluish: color, Veg. Mil. 4, 37: cucullus, Juv. 3, 170: lutum, Mart. 3, 74, 4: conditura (piscium in marinā aquā coctorum), Lampr. Heliog. 24. 
 
- (β)  Factio, the party clothed in blue, the Blues, Suet. Vit. 14.
Hence, as subst.: Vĕ-nĕtus, i, m., one of the Blue faction, Mart. 6, 46, 1; 10, 48, 23; 14, 131, 1; v. factio.
Hence, Vĕnĕtĭāni, ōrum, m., the adherents of the Blues, the Blues, Capitol. Ver. 6; Inscr. Grut. 1075, 9. 
- (γ)  Vĕnĕtus lăcus, a  portion of the lake of Constance, Mel. 3, 2, 8.
 
- 2.  Vĕnĕtĭa, ae, f., the country of the Veneti, Plin. 3, 18, 22, § 126; Liv. 39, 22; 41, 27; Vell. 2, 76, 2 al.
 
- II.  A people of Gallia Lugdunensis, in the vicinity of the mod. Vannes, Plin. 4, 18, 32, § 107; Caes. B. G. 2, 34; 3, 7 sq.; 3, 16 sq.; 7, 75; Flor. 3, 10, 5. 
Hence,  
- 1.  Vĕnĕtĭa, ae, f., the country of the Veneti, Caes. B. G. 3, 9 fin.
 
- 2.  Vĕ-nĕtĭcus, a, um, adj., of or belonging to the Veneti, Venetic: insulae, Plin. 4, 19, 33, § 109: bellum, Caes. B. G. 3, 18; 4, 21.
 
- III.  A people of northern Germany,  =  Venedi.