What is a word called that represents what it sounds like?

A word that represents what it sounds like is called an onomatopoeia.

Here are some examples:

* Bang - the sound of a door slamming

* Meow - the sound a cat makes

* Buzz - the sound of a bee

* Sizzle - the sound of food cooking in a pan

* Clang - the sound of metal hitting metal

Let me know if you'd like to learn more about onomatopoeia!