racquetball
nounA game played on a four-walled court by two or four players who alternately hit a small rubber ball against the front wall with short-handled rackets, with play stopping if the ball bounces twice on the floor or does not reach the front wall.
nounA certain
A ball used for this sport.
nouna game played on a handball court with short-handled rackets
nounthe ball used in playing the game of racquetball