"Burned out" can more mean doing something and you just cannot handle doing it anymore. More than just tired. E.G. "I had a job selling magazines door to door but got burned out from all the rejection".

In my opinion , "burned out " means to make or become exhausted, especially as a result of long-term stress . So I think " he got burned ( or burnt ) out " may possibly mean He became tired , exhausted or worn out or pooped . They're just the same in meaning . :)

Derrick's answer is correct. If you are "burned out at your job" it means that you can't do that type of work and instead need a totally different kind of work. "She was a software designer for years, but got burned out, and so became a cake decorator." You can think of it like a light bulb that gets burned out from over-use. The other descriptions, being "exhausted" or "worn out" or "pooped" imply that you're tired just for that day or that week. But burned out implies that it will take you much longer to recover, like months or years. I can love my job but still be exhausted at the end of the day. But if I'm burned out at my job then there is no joy left in it for me, and I will eventually be unable to continue doing it well, like an over-user muscle that gets weaker.

according to Cambridge dictionary there is three meanings... 1) If a fire burns out, it stops producing flames because nothing remains that can burn. 2) If something such as a motor burns out, it stops working because of damage from heat. 3) (burn yourself out) to be forced to stop working because you have become ill or very tired from working too hard.

If you use all your energy doing something and just give yourself no rest in between, you'll get burned out. (exhausted)!