(anc. geog.) a river in Infubria, rising in mount Adula, traversing the Lacus Verbanus southwards, and falling into the Po near Ticinum. Between this river and the Po Hannibal gained his first victory over the Romans under P. Scipio. The general himself escaped with the utmost difficulty, and that by the bravery of his son the first Scipio Africanus. Now the Tegno, rising in mount Godard, running south through the Lago Maggiore and Milan, by Pavia, into the Po.