funnel cloud

funnel cloud

noun
a rapidly rotating funnel-shaped cloud extending downward from the base of a cumulonimbus cloud, which, if it touches the surface of the earth, is a tornado or waterspout.
Also called pendant cloud, tornado cloud, tuba.
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Based on the Random House Dictionary, © Random House, Inc. 2012.
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Funnel cloud is always a great word to know.
So is flibbertigibbet. Does it mean:
a chattering or flighty, light-headed person.
a fool or simpleton; ninny.
Collins
World English Dictionary
funnel cloud
 
n
a whirling column of cloud extending downwards from the base of a cumulonimbus cloud: part of a waterspout or tornado

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Dictionary.com's 21st Century Lexicon
Main Entry:  funnel cloud
Part of Speech:  n
Definition:  a funnel-shaped cloud descending from a towering cumulus or cumulonimbus that, if it reaches the ground, becomes a tornado
Usage:  science
Dictionary.com's 21st Century Lexicon
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