The severed leg of a deer. Usually not the whole leg, it is almost always a section containing the animal's hoof. It is upstate New Jersey's answer to the cursed monkey paw, and represents an antagonist to the lucky rabbit foot.
In folklore, the deerleg will reappear to and haunt whomever finds it, even in their thoughts and dreams. It is a bad omen.
Friends of mine found the deerleg alone at an abandoned gas station in NJ during a road trip to a UFC event.