A Quaffle is one of the balls in Quidditch.
It is red, made of leather, and about the size of a soccer ball and is practically immobile.
The Chasers try to pass the Quaffle through one of three hoops on the opposing side of the arena. Succeeding will result in a point scored to the team of the successful Chaser. The Keeper tries to prevent the Quaffle from getting into the hoops (and it's considered an insult to a Keeper to imply that he or she tends to let it in).
- It is against the rules for the Chaser to touch the Quaffle while it goes through the hoop, and for the Keeper to defend the hoop from the back of it.