Definition of: tennis

(ten′is) noun
A game played by striking a ball to and fro with rackets over a net stretched perpendicularly across a space called a court. It has two forms, court tennis, played indoors in a specially prepared building, and lawn tennis, played out–of–doors on a court of grass, clay, concrete, etc. [<AF tenetz take, receive, imperative of tenir hold; from the call of the server]
TENNIS COURT
—PLAN AND DIMENSIONS