What Is the Definition of a Star?

There is a wide variety of types of stars out there in the universe, right? There is the kind that are burning, and there is the kind that is just simmering there. Ye, i guess, you know, the definition probably started when we looked up at the night sky and saw bright, shiny things. And it takes a real leap to understand that those are actually superduper massive and far away rit that they appear to be so only because they are so distant.