Lewis Short
(adjective) : Trans-alpīnus, a, um
* That is or lies beyond the Alps, Transalpine: Gallia,Caes. B. G. 7, 1; 7, 6; Cic. Mur. 41, 89: cognatio materna Transalpini sanguinis,id. Red. in Sen. 7, 15: nationes,id. Fam. 9, 15, 2: bella,id. Off. 2, 8, 28.—In plur. subst.: Transalpīni, ōrum, m., nations beyond the Alps, Transalpine nations: legio una ex Transalpinis conscripta,Suet. Caes. 24.
Charlton T. Lewis, Charles Short, A Latin Dictionary