Racket Sport, Rebound a Small Ball Off the Walls
Puzzle 16 of Stay Cool Piece of Cake Pack
Question is: Racket Sport, Rebound a Small Ball Off the Walls
and the answer is: SQUASH
Word Meaning:
SQUASH — (uncountable) A sport played in a walled court with a soft rubber ball and bats like tennis racquets.
Definitions from Wiktionary.