A court game that is identical to handball but utilizes a short racquet and a larger, softer ball.

a game played on a handball court with short-handled rackets

Racquetball is a sport played with racquets and a hollow rubber ball on an indoor or outdoor court. It was invented by Joe Sobek in 1948 incorporating rules from squash and handball. Unlike most racquet sports (such as Tennis or Badminton), usage of the walls, floor, and ceiling of the court is considered legal in the context of the sport, rather than out-of-bounds.

the ball used in playing the game of racquetball