Lewis & Short

antĕ-vŏlo, āre, v. n., to fly before; with acc. (only post-Aug.; in Verg. A. 9, 47, and 12, 455 Rib., it is written apart, ante volo): currum, Stat. Th. 3, 427: agmen, Sil. 12, 600: Zephyros, Claud. Phoen. 21.