Nursery bogies are a class of frightening spirits, ogres, and monsters used by adults to frighten children into good behavior or to prevent them from entering dangerous situations. These bogies have a terrifying appearance and reputation of harming or eating children.
- Rose, Carol. (1998). Spirits, Fairies, Leprechauns, and Goblins: An Encyclopedia. New York: W.W. Norton & Company, Inc.