Tennis - definition of tennis by The Free Dictionary
ten·nis (tĕn′ĭs) n. 1. A game played with rackets and a light ball by two players or two pairs of players on a rectangular court divided by a net. The players must hit the ball over the net and into a marked area on the other side for play to continue. Also called lawn tennis. 2. Court tennis. [Middle English tenetz, tenyes, court tennis, from ...