What makes a camera "non-pro"?

Could someone clarify what about a camera makes it "non-professional"? Size? Mega-pixels?

I'm not a professional photographer, but I would like to get some good pictures at the Travis show tomorrow night. Seems to me that the camera doesn't determine professionalism, but the skill of the photographer him/herself. So the term "non-pro" is quite vague.

I have a Canon Digital Rebel, which is certainly not a professional camera. But it's not a small fit-in-your-pocket camera either.

Can someone enlighten me? Thanks!

Generally speaking if it has a detachable lens we consider it a â??professionalâ? camera. By non-pro we mean that handheld point and shoot cameras are okay.