E‐ques″tri‐an (?), a. [L. equester, from eques horseman, fr. equus horse: cf. F. équestre. See Equine.] 1. Of or pertaining to horses or horsemen, or to horsemanship; as, equestrian feats, or games.
2. Being or riding on horseback; mounted; as, an equestrian statue.
An equestrian lady appeared upon the plains. Spectator.
3. Belonging to, or composed of, the ancient Roman equities or knights; as, the equestrian order. Burke.