Wikipedia
Ghoul
A ghoul is a mythological monster from ancient Arabian folklore that dwells in burial grounds and other uninhabited places. The English word comes from the Arabic name for the creature: الغول al-ghūl, which literally means "demon". The ghul is a devilish type of jinn believed to be sired by Iblis.
In the Arabic language, the female form is given as ghouleh*Muhawi, Ibrahim, and Sharif Kanaana. Speak, Bird, Speak Again: Palestinian Arab Folktales. Berkeley: University of California Press, c1988 and the plural is "ghilan".
In common Arabic everyday speaking, the term ghul (ghouleh for a woman) is sometimes used to describe a greedy or gluttonous individual.
The ghoul is a desert-dwelling, shapeshifting demon that can assume the guise of an animal, especially a hyena. It lures unwary travellers into the desert wastes to slay and devour them. The creature also preys on young children, robs graves, drinks blood, and eats the dead"ghoul", Merriam-Webster Online Dictionary taking on the form of the one they previously ate. Because of the latter habit, the word ghoul is sometimes used to refer to an ordinary human such as a grave robber, or to anyone who delights in the macabre.
The star Algol takes its name from this creature.
In Persia
Persian imagery and belief in ghouls comes from Arabia. The Quran makes no mention of ghouls.
Fictional representations
Ghouls and ghoul-like creatures have been portrayed in many instances in fiction, including a series of dark fantasy, short stories by Brian McNaughton, a Michael Slade novel, Ghoul, Larry Nivens Ringworld series, J.K. Rowlings Harry Potter series, The Chronicles of Narnia, the works of Caitlín R. Kiernan, Laurell K. Hamiltons Anita Blake series, Jim Butchers The Dresden Files and Eric Kripkes Supernatural. In many cases these representations of ghouls are of people whose cannibalism has altered their mental health and physical appearance, driving them insane, and causi read more at » http://en.wikipedia.org/wiki/Ghoul