Gr. Myth. a Titan who steals fire from heaven for the benefit of mankind: in punishment, Zeus chains him to a rock where a vulture (or eagle) comes each day to eat his liver, which grows back each night
See Prometheus in American Heritage Dictionary 4
(prə-mēˈthē-əs, -thyo͞osˌ)
noun
Greek Mythology A Titan who stole fire from Olympus and gave it to humankind, for which Zeus chained him to a rock and sent an eagle to eat his liver, which grew back daily.