What is "bouncy ball"

n. A small polybutadiene rubber ball with a strong rebound when thrown or dropped.

A bouncy ball, power ball or super ball is a popular polybutadiene rubber toy ball which rebounds proportionally to the amount of force used when thrown at a hard surface. The first such ball was the proprietary Super Ball. The Sky Ball is an example of another bouncy ball. Bouncy balls can often bounce over three stories high and can also be thrown against a wall and caught when bouncing back.

In some countries, for example the United States and Denmark, they are often sold from bulk vending machines for 25 cents or more.