from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun A line of thunderstorms preceding a cold front.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun meteorology A line of thunderstorms, hundreds of miles long, with squalls at the advancing edge

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun a cold front along which squalls or thunderstorms are likely


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