Lewis & Short

3. Vārus, i, m., a surname, esp. in the gens Quintilia; e. g. P. Quintilius Varus, defeated by Arminius, Vell. 2, 117; Suet. Aug. 23; id. Tib. 17; Tac. A. 1, 3; 1, 43; 1, 55; 1, 60 al.
Hence, Vārĭānus, a, um, adj., of or belonging to a Varus, Varian: clades, Suet. Aug. 23; 49; id. Tib. 17; 18; id. Calig. 3; 31.