You can easily go through and cherry-pick through hundreds of sources of defintions found across the web and in print. Saying that someone's "doesn't count because it isn't official" isn't really fair, since there is no single, standard "official" definition. My point was that you needed a starting point. If you are going to claim that cheer IS a sport, you have to be able to say what a sport is. I have seen hundreds of posts on this topic over the last 15 years and RARELY does anyone "chime in with their definition".
any activity or experience that gives enjoyment or recreation; pastime; diversion
Such an activity, esp. when competitive, requiring more or less vigorous bodily exertion and carried on, sometimes as a profession, according to some traditional form or set of rules, whether outdoors, as football, golf, etc., or indoors, as basketball, bowling, etc.
An activity involving physical exertion and skill that is governed by a set of rules or customs and often undertaken competitively.
an active diversion requiring physical exertion and competition
an activity in which players or teams compete against each other, usually an activity that involves physical effort
a game, competition or activity needing physical effort and skill that is played or done according to rules, for enjoyment and/or as a job
all types of physical activity which people do to keep healthy or for enjoyment
an active diversion requiring physical exertion and competition