Horse Artillery

( Mil. ) See ARTILLERY CORPS. Horse'back, n. The back of a horse. - The state of being mounted on a horse; posture of riding on a horse; expre ed especially in the phrase on horseback. I've seen the French, and they can well on horseback." Shaks. Horse'-ball, n . In veterinary surgery, a large pill, or bolus, administered as medicine to horses. Horse'-balm, n . ( Bot .) See COLLINS ON I A. Horse'-bean, n. A sort of small bean, used as food for horses.