Pronunciation: (ē-ol'u-pīl"), [key]
1. a round vessel caused to rotate by the force of tangentially escaping steam: an early example of jet propulsion.
2. a device for injecting the vapors of heated alcohol into a laboratory furnace. Also,ae•ol'i•pyle",eolipile.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.