Pelops, in the Greek mythology the grandson of Zeus and son of Tantalus, who was slain by his father and served up by him at a banquet he gave the gods to test their omniscience, but of the shoulder of which only Demeter in a fit of abstraction partook, whereupon the gods ordered the body to be thrown into a boiling caldron, from which Pelops was drawn out alive, with the shoulder replaced by one of ivory.