English language help - pretty please

[from_the_corner]

Or I should rather say - cultural reference. Because I too often lack those, for obvious reasons =)

One of my prompts for art_bingo is JACK FROST.

First thing that I though of, was the movie. But the guy there was simply a snowman, right? I thought it would be a litle too easy, so I read "jack frost" Wiki page and then googled it, for a good measure. And ended up knowing even less than at the beginning.

So, when you say "Jack Frost" - what you actually mean?