The term TENNIS-PLAYING AREA can be summarized as a COURT, which is a five-letter word. A COURT is an area specifically designed for playing the sport of tennis. It is typically rectangular in shape and is composed of a flat surface with a net running across the middle. The COURT is usually surrounded by a fence or wall to keep the ball from going out of bounds. The COURT is also marked with lines that indicate the boundaries of the playing area.