Thanks, Cm2DD, for doing the legwork. I disagree with Longman's definition. Granted, they qualify it by stating "often", but it's still a value judgement they are implying that shouldn't be there. Many people may believe that, but it's not part of the word's meaning.
A jock is always male, isn't he?
As a matter of fact, no. I mean, I've never heard of "jockettes". :-)
Above is an example of puberty-aged children discussing the burning issues of their world. ;-)
RE #6: Well, yes, I agree. However, "jock" is such a common word in AE (I suspect that virtually every American is familiar with this meaning of the word) I would welcome a LEO entry in some form or another - if only a short explanatory note.
I think "Sportskanone" comes close in many aspects and might work in some contexts. Offhand, I'd say there is no exact German equivalent simply because the system of intermural and collegiate sports and the culture associated with them just doesn't exist in Germany. Right?