So you know how you play with different balls like soccer ball, basketball, or tennis ball? Bowling ball is just like that, but it's for a game called bowling.
It's a big, heavy ball that you roll down a long, wooden lane to try and knock down some big pins at the end. It's usually made of a material called urethane or resin that's really tough and can take a beating.
The ball has three holes in it for your fingers and thumb to go into so you can hold onto it really tightly and not drop it. It might be a little heavy for you to pick up on your own, so it's important to have grown-ups help you out.
When you're bowling, you want to try and make sure the ball goes straight down the lane and hits the pins just right so you can knock down as many as possible. It can be hard at first, but with some practice, you can get really good at it!