sport (spôrt, sp
rt)
n.1. a. Physical activity that is governed by a set of rules or customs and often engaged in competitively.
b. A particular form of this activity.
2. An activity involving physical exertion and skill that is governed by a set of rules or customs and often undertaken competitively.
3. An active pastime; recreation.
I agree with the above definitions of sport. So far as I am concerned it is not a sport if the participants exert about the same level of effort as playing tiddlywinks.
Ping pong? Yes it is a sport - it requires a high level of effort and considerable skill to play well. Bowling? - I'm not so sure. My arthritic mother bowled. I suppose to her it was a sport since it took some effort and skill on her part, but I never found the game particularly taxing. I put it in the same category as freestyle bocce, which requires little effort or skill at all.