Polo/ˈpəʊləʊ/ Definition 1 of 4Pro Tip 1/3Sports Origin Understand 'polo' originated as a sport and the word primarily relates to the equestrian game. She plays polo professionally. Pro Tip 2/3Not Water Polo 'Polo' differs from 'water polo'; the former is on horses and latter is a water sport. He mistook water polo for polo at the horse club. Pro Tip 3/3Upper-class Sport Polo is often associated with wealth and aristocracy, sometimes used metaphorically. The gala had a polo match elegance to it.