Answer:

handball

AnswerCrossword Clue
HANDBALLOne-walled game
HANDBALLHard rubber sphere
HANDBALLGame played in a walled court
HANDBALLCourt game
HANDBALLSport requiring a wall
HANDBALLPopular sport.
HANDBALLSport.
HANDBALLGame.
HANDBALLPopular game.
HANDBALLWall game.
HANDBALLGame originally called "fives"
HANDBALLOff-the-wall pastime?
HANDBALLOff-the-wall sport?
HANDBALLSquash cousin
HANDBALLGame like squash