Lewis & Short

ăquĭlĭfer, fēri, m. [aquila-fero], an eaglebearer, standard-bearer, an officer who carried the chief standard of the Roman legion, Caes. B. G. 5, 37; id. B. C. 3, 64; Suet. Aug. 10; Inscr. Orell. 3389; 3477; 4729.