2. Cossus, i, m., a surname in the gens Cornelia (cf. Paul. ex Fest. p. 41, 9 Müll.); so esp. the military tribune in the war with the Veientes, A. Cornelius Cossus, Liv. 4, 19, 1 sq.; and id. 4, 30, 4 sqq.; Verg. A. 6, 841; Juv. 8, 21 al.