1) (of a horse) a pace faster than a trot but slower than a gallop; period of riding at such a pace (canter)

2) (of a horse etc) the fastest pace, with all four feet off the ground at each stride; period of riding at such a pace (gallop)

3) a four-legged animal with solid hooves, used to carry loads, riding etc (horse)

4) (in western US) a contest of skill in catching cattle with a rope, riding wild horses etc (rodeo)