I fundamentally disagree with you.
You don't really. Or at least you didn't here.
I think it IS worth having discussions about "What" retirement means and that it CAN have a variety of meanings and the "concept" can be interpreted differently.
You desire to define things however you feel like and are hiding that behind the notion that you're just being an independent thinker.
As you noted in various dictionary definitions... the term is clear, simple and conforms to what I already wrote...
"Merriam-Webster: Retirement: withdrawal from one's position or occupation or from active working life."
As I said -it means you stopped working for income (occupation/active working life all fit this).
"Dictionary.com: Retirement: the act of retiring, withdrawing, or leaving; the state of being retired."
This is simply an entirely vague version of the term which can be used for things like, "She retired to the drawing room after tea."
"-2. The act of retiring or of leaving one's job, career, or occupation permanently, usually because of age-"
Again, as I said... leaving work. The 'usually because of age' is actually an added flaw. Not 'wrong', but since it's only 'sometimes true', it shouldn't be part of a definition.
"-Investopedia: When a person chooses to leave the workforce.-"
HOW DO YOU NOT SEE... all of these are exactly how I defined it. And you have yet to define the word, but how you used it does NOT conform to ANY of these definitions!?
It's just bizarre that you posted all those as if they helped make
your case?
...what is the definition of "work" and who gets to make the call for each of us what is considered work?
I shouldn't have to define 'work' for you. It's pretty simple as well. Physics has done it in general. In more casual use, it's basically 'actively doing something of effort' to make something happen.
In more specific use (as we're obviously using it here), you can add the idea of the 'something' being done to 'make money'. This is how everyone uses the term. If you don't do work for money, people typically define that work as a 'hobby' to differentiate that one financial difference.
I'm fairly certain you know this already, so it ticks me off that you're going down this shifty rhetorical road.
You better not ask me what 'something' means. I mean, jesus... every word has to be defined with other words, so you can literally question any definition to infinity (if you're trying to be dishonest or a dick).
Can you just admit now that my definition makes clear sense, is backed-up 100% by
your own quick research, and
none of it matches your idea that someone's still retired if they go back to work?