How would you define a dead end job?

This was inspired by @mikey7183 who asked Do you consider your job a dead-end job?

In the middle of answering I realized that I define whether or not I have hit a dead end based on the money I make. However I am sure many people think of it in other terms, for instance you could get an annual raise in pay but if you hate your job that could be considered a dead end or you might enjoy your job very much but maybe your title hasn’t changed in the last 3 years, this also could be considered a dead end