Equestrian (noun)

1. A person who rides horses, especially as a sport or hobby.
2. Relating to horseback riding or horseback riders.

Origin:

The word equestrian comes from the latin word "equester" meaning "of or belonging to horseback riders".

Examples:

1. She is an accomplished equestrian and competes in dressage events.
2. He is an equestrian coach and trains riders of all levels.
3. The equestrian center offers riding lessons and trail rides.
4. The equestrian team won the regional championships.
5. The statue of the equestrian is a famous landmark in the city.