ghoul

n. spirit, ghost, demon who robs graves and eats corpses; one who robs graves; one who enjoys disgusting or revolting things

A ghoul is a 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 ghūl, which literally means "demon". The ghul is a devilish type of jinn believed to be sired by Iblis.The female form is given as "ghouleh" in Muhawi and Kanaana (see ref below). The plural is "ghilan".Ghul is also the name for 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, and eats the dead. 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 word "ghoul" has also been used to describe cannibals such as Jeffrey Dahmer.. The term "ghoul" may also be used as slang, particularly in Ireland, to describe a person who acts in an odd and/or humorous manner.
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Noun
1. someone who takes bodies from graves and sells them for anatomical dissection
(synonym) graverobber, body snatcher
(hypernym) thief, stealer
2. an evil spirit or ghost
(hypernym) evil spirit

(n.)
An imaginary evil being among Eastern nations, which was supposed to feed upon human bodies.
  

[Islamic] In Muslim folklore, the ghoul is a demon of the desert that is able to assume the shape of an animal. It is an evil spirit that robs graves and feeds on the flesh of the dead or on young children. They inhabit lonely places, especially graveyards. They also lure travelers into the desert, sometimes beguiling those traveles by prostituting themselves, and then devouring them. The Arabic ghoul of the wasteland seems to be a personification of the terror of the desert.