n. 骑马疾驰的人, 飞跑的马, 传令官, 轻野炮, 轻便炮车

Galloper \Gal"lop*er\, n.
1. One who, or that which, gallops.

2. (Mil.) A carriage on which very small guns were formerly
mounted, the gun resting on the shafts, without a limber.
--Farrow.

{Galloper gun}, a light gun, supported on a galloper, --
formerly attached to British infantry regiments.