From Longman Dictionary of Contemporary Englishracquetballrac‧quet‧ball /ˈrækətbɔːl $ -bɒːl/ noun [uncountable] DSOan indoor game in which two or four players hit a small ball against the four walls of the court → squash
Examples from the Corpus
racquetball• He takes Aikido martial arts classes, plays tennis and racquetball and occasionally strikes up a romance.• For his part, Mayor Miller says he plays racquetball, and thus has never witnessed Thoreson sharing the greens with developers.• At the time, racquetball was taking off. 