The definition of hardcore gamer?

[Bodhesatva]

ckmlb said:
If you play only a few games or one game or genre a lot that makes you a hardcore player of that game or genre, not a hardcore gamer....

By this definition, professional CS players aren't hardcore gamers. That's silly, in my opinion. You're welcome to define this however you'd personally like, as this is just slang and not a technically recognized term, but I think reasonable people (including me) can disagree with it.