Lewis Short
Marsi | Marsus, a, um | Marsĭcus, a, um (noun M) :
* A people in Latium, on the Lacus Fucinus, celebrated as wizards and snake-charmers; in the Social War the most zealous enemies of the Romans, Plin. 7, 2, 2, § 15; 3, 12, 17, § 106; Caes. B. C. 1, 15; Liv. 8, 6; 9, 41 sq.; 26, 11; Flor. 3, 18, § 6; § 13 et saep.—Sing. collect., Cic. Div. 2, 33, 70.
* Hence
* A people of Germany, between the Rhine, Lippe, and Ems, Tac. G. 2; id. A. 1, 50; 56; 2, 25; id. H. 3, 59.
* Adj., Marsian, Marsic: bellum,Cic. Agr. 2, 33, 90; id. Div. 1, 44, 99; 2, 27, 59: pubes,Sil. 8, 496: vinum,Mart. 13, 121.
Charlton T. Lewis, Charles Short, A Latin Dictionary