EQUES'TRIAN, adjective [Latin equester, equestris, from eques, a horseman, from eqnus, a horse.] 1. Pertaining to horses or horsemanship; performed with horses; as equestrian feats. 2. Being on horseback; as an equestrian lady. 3. Skilled in horsemanship. 4. Representing a person on horseback; as an equestrian statue. 5. Celebrated by horse-races; as equestrian games, sports or amusements. 6. Belonging to knights. Among the Romans, the equestrian order was the order of knights, equites; also their troopers or horsemen in the field. In civil life, the knights stood contra-distinguished from the senators; in the field, from the infantry.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI