@Cycloptichorn,
Natch it would be a stupid game to you Cyclo because you couldn't or wouldn't answer the question either. There are numerous ways to define the word but only one from an economic point of view. A useful activity. Caring for an elderly or sick person without reward or official recognition is a job from an economic point of view. Trying to render people sexy is not a job from an economic point of view unless there is more shagging as a result than there was before they were rendered sexy And that might depend on what birth rate the environment can cope with. Or buttressing their self-esteem.
Those sort of definitions are psychological and not economic. Evolution theory is strict economics.
Or a job is what people go to for a time in return for coupons to trade at the shops and independently of what is produced by the work.
I could dilate on the subject all night but it's pub time. All some jobs do is create other jobs. Like a Ponzi. NFL for example. What possible economic use is 22 grunts running around a ******* field chasing a ball that isn't even round. And most of them needing expert medical treatment at a number of levels. And kit. That has nothing to do with economics. That's psychology.