thundercloud definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
a storm cloud charged with electricity and producing lightning and thunder
thundercloud definition by American Heritage Dictionary
The 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 large dark cloud charged with electricity and producing thunder and lightning; a cumulonimbus cloud.
- Something menacing or dreadful: thunderclouds of impending war.
thundercloud - Science Definition