v. & n.
v. 1 a tr. mount (a horse etc.) again. b intr. get on horseback again. 2 tr. get on to or ascend (a ladder, hill, etc.) again. 3 tr. provide (a person) with a fresh horse etc. 4 tr. put (a picture) on a fresh mount.
n. 1 a fresh horse for a rider. 2 a supply of fresh horses for a regiment.