E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
Prometheus (3 syl.)
made men of clay, and stole fire from heaven to animate them. For this he was chained by Zeus to Mount Caucasus, where an eagle preyed on his liver daily. The word means Forethought, and one of his brothers was Epimetheus or Afterthought.