Windigo

"A windigo is an Indian who has eaten, or who (perhaps a poor lunatic) says he wants to eat, human flesh. At Sturgeon Lake (Bishop Clut tells us), among the Indians uninfluenced by religion, there were some supposed windigos. A sudden fear of them seized upon the other Indians, and they executed one windigo. The important point in such a case was to make the cannibal vomit up the ice which he was supposed to have in his inside."