A ghoul is a monster from ancient Arabian folklore
that dwells in burial grounds and other uninhabited places. The
ghoul is a devilish type of jinn believed to be sired by Iblis.
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, 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.