Gate

A gate is like a big fence that opens and closes. It's there to keep things inside or outside a certain space. For example, you might have a gate in your backyard to keep your dog from running away.

Sometimes people use gates to keep things safe. Think about a castle - it has a big gate to keep bad guys out.

There are all kinds of gates - some are made of metal, some are made of wood or plastic. You can open them by pushing or pulling, or sometimes there's a button or a handle you have to turn.

So, in short, a gate is like a door for a big space, and it helps keep things in or out.