The term TENNIS RACKET'S TARGET can be summarized as the object that a tennis racket is used to hit, which is a BALL. The crossword solution for this term is four letters long and is BALL. A tennis BALL is a small, round, and usually fuzzy object that is used in the sport of tennis. It is typically made of rubber or felt and is filled with air. The BALL is hit back and forth between two players using a tennis racket.