·noun One who rides on horseback; a horseman; a rider.
II. Equestrian ·adj Being or riding on horseback; mounted; as, an equestrian statue.
III. Equestrian ·adj Of or pertaining to horses or horsemen, or to horsemanship; as, equestrian feats, or games.
IV. Equestrian ·adj Belonging to, or composed of, the ancient Roman equities or knights; as, the equestrian order.