noun

• (mythology) A demon said to feed on corpses.
  "The other chamber had shown a pack of ghouls and witches over-running the world of our forefathers, but this one brought the horror right into our own daily life!."
• (derogatory, colloquial) A person with a callous or uncaring attitude to human life and suffering, particularly when prioritizing economic concerns.
  "Restored to bumptiousness, Peter arrived jauntily in the kitchen, to survey Mrs Dibble's body as a spectacle new to him, and remark, "So the old trout's done herself in properly this time, I'm told. About time she did, the way she's been going on here." "Shut up, you old ghoul, and help Dr Grimsby to carry her upstairs.""