Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio.
- an automatic valve for a steam boiler, pressure cooker, etc., which opens if the pressure becomes excessive
- any outlet for the release of strong emotion, energy, etc.
Used by arrangement with John Wiley & Sons, Inc.
nounThe American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
- A valve in a pressure container, as in a steam boiler, that automatically opens when pressure reaches a dangerous level.
- An outlet for the release of repressed energy or emotion.