Trans-rhēnānus — Lewis & Short
Trans-rhēnānus, a, um, adj.,
I that is beyond the Rhine, Transrhenish:
Germani,Caes. B. G. 5, 2, 5:
hostes,i. e. the Batavians, Plin. 19, 1, 2, § 8:
lares,Amm. 20, 4, 4. — As subst.: Transrhēnāni, ōrum, m., those living beyond the Rhine, Caes. B. G. 4, 16.