ghoul 
(gl)
(gl)n.
1. An evil spirit or demon in Muslim folklore believed to plunder graves and feed on corpses.
2. In popular folklore, an undead or subhuman being, especially one that eats human flesh.
3. A grave robber.
4. One who delights in the revolting, morbid, or loathsome.
[Arabic ġūl, from ġāla, to seize, snatch; see ġwl in Semitic roots.]
ghoulish adj.
ghoulish·ly adv.
ghoulish·ness n.