A pump dispenser is like a magic bottle that helps us get things out easily. It has a little button on top that we can press down and it will make the stuff inside come out of the bottle. This is called dispensing.
Pump dispensers are commonly used for liquid soap, lotion or hand sanitizer. You might have seen them in public bathrooms or in your own home. When we push down on the button of the pump dispenser, it creates suction that pulls the liquid up through a tube and out of the nozzle. It's like when you suck liquid through a straw.
The good thing about pump dispensers is that they are very easy to use. When we use a regular bottle, it can be hard to get just the right amount of product out. But with a pump dispenser, we can control how much comes out very easily by just pressing the button a little or a lot of times. This way we don't waste any of the product.
So, in short, a pump dispenser is a magical bottle that helps us get stuff out easily, like soap, lotion or hand sanitizer. It has a little button we can press to make the stuff come out, and it's super easy to use.