| 1. | a game played on horseback between two teams, each of four players, the object being to score points by driving a wooden ball into the opponents' goal using a long-handled mallet. |
| 2. | any game broadly resembling this, esp. water polo. |
| 3. | polo shirt. |

| a short-sleeved, pullover sport shirt, usually of cotton or cottonlike knit, with a round neckband or a turnover collar. |