n. [ Right, adv. + about, adv. ] A turning directly about by the right, so as to face in the opposite direction; also, the quarter directly opposite; as, to turn to the right-about. [ 1913 Webster ]

To send to the right-about, to cause to turn toward the opposite point or quarter; -- hence, of troops, to cause to turn and retreat. [ Colloq. ] Sir W. Scott. [ 1913 Webster ]