mole (pronounced mole, I think there is an accent over the e) is a mexican dish. All mole really means is sauce. But usually, mole is a chocolate sauce served over meat. Of course, it does have other stuff in it. It isn't an incredibly sweet sauce, it is actually savory and spicy. Mole varies from area to area of mexico, for instance vera cruz mole doesn't have chocolate and is just a really spicy sauce, but usually it is a chocolate sauce. It can also be used for making enchiladas, but enchilada sauce is better for enchiladas IMO, I don't really like mole enchiladas as much.
http://en.wikipedia.org/wiki/Mole_%28sauce%29
(I'm a pretty good typer for being pretty trashed. Why is english beer so much more potent than others?)