Vexillum, vexilli, n. g. Cæs. A banner, standerd, ensigne or flag.Martium vexillum. Sil. Nauale vexillum. Claud. Sub vno vexillo mitti. Cæs. To be sent as souldiours vnder one standerd.Fortunæ vexilla submittere. St. To submit himself to fortiie.
Lewis and Short: Latin dictionary
vexillum, i, n. [dim. of vēlum], a military ensign, standard, banner, flag.I. In gen., Caes. B. G. 6, 36; Cic. Phil. 2, 40, 102; 5, 11, 29; id. Att. 10, 15, 2; id. Agr. 2, 32, 86; Tac. A. 1, 20 al.—II. In partic., a red flag placed on the general's tent, as a signal for marching or for battle: vexillum proponere, to raise or display, Caes. B. G. 2, 20: vexillo signum dare, id. B. C. 3, 89 fin.—B.Transf., the troops belonging to a vexillum, a company, troop, Liv. 8, 8; Tac. H. 1, 70; Stat. Th. 12, 782.—III.Trop.: Fortunae, Stat. S. 4, 2, 43.