anvil cloud(redirected from anviltop)
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The upper portion of a well-developed cumulonimbus cloud that has reached an altitude at which high lateral winds blow across the top of the cloud, creating a flat anvil shape.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
another name for a cumulonimbus cloud, which tends to be anvil-shaped
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014