Anyone who has a powerful and, sometimes, uncontrollable desire or yearning for something. May be used in the same nature as "slut", "
whore", "fiend", or "junkie", in the sense of someone who is
crazy for something. However, usually "ghoul" labels the people with the more serious cases of lusting for something.
Common "ghoul" focuses are: sex, drugs, food, porn, alcohol,
money, gambling, caffeine, spending, candy, etc...