OK, somebody: Please take the time to define or describe Morris dancing? (I'm probably the only Mudcatter who has no idea of it. But that's one!)

I tried to look it up but mostly what I found was websites for it and a lot of tunes that are evidently traditionally played in it. I gather that many of the tunes are jigs? I know some of the tunes, such as Haste to the Wedding and The Rose Tree but most of them are new to me.

So is Morris dancing a style rather than typified by the tunes?

If someone will give me a quick summary, I will appreciate it.

Ebbie