'Ghoul' definitions:

Definition of 'ghoul'

From: WordNet
noun
Someone who takes bodies from graves and sells them for anatomical dissection [syn: graverobber, ghoul, body snatcher]
noun
An evil spirit or ghost

Definition of 'Ghoul'

From: GCIDE
  • Ghoul \Ghoul\ (g[=oo]l), n. [Per. gh[=o]l an imaginary sylvan demon, supposed to devour men and animals: cf. Ar. gh[=u]l, F. goule.] An imaginary evil being among Eastern nations, which was supposed to feed upon human bodies. [Written also ghole .] --Moore. [1913 Webster]

Synonyms of 'ghoul'

From: Moby Thesaurus