Definition from Wiktionary, the free dictionary
The Proto-Algonquian term was *wīntekōwa, which probably originally meant "owl" (Goddard 1969, cited in Brightman 1988:340).
wiindigoo (plural: wiindigoog)
- (Algonquian mythology) A malevolent cannibalistic spirit into which humans may transform, or which may possess humans: a wendigo/windigo.
- A cannibalistic or man-eating giant or monster which may appear in the winter.
- He/she is a wendigo!