Chain saw

Okay kiddo, a chainsaw is a tool that helps people cut things like trees and logs into smaller pieces. It has a long metal bar with a chain that rotates around it really fast, kind of like how a bicycle chain goes around the gears. The chain has lots of little sharp teeth that can easily cut through wood when it spins.

When you want to use the chainsaw, you have to plug it in or add gasoline to fuel it up. Then you put the chainsaw's bar against the thing you want to cut and squeeze a trigger to make the chain spin. You have to be really careful when using a chainsaw because the chain is extremely sharp and can hurt you if you touch it. That's why people who use chainsaws wear special protective gear like helmets and gloves to keep themselves safe.