C / Carnuntum
noun

Carnuntum

gen. Carnunti · gender neuter · decl. 2nd
an old Celtic town of Upper Pannonia; on the Danube; Haimburg
an old Celtic town of Upper Pannonia, on the Danube (now near Haimburg), Vell. 2, 109, 5; Plin. 4, 12, 25, § 80; Inscr. Orell. 2288 al.