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thunderstone

 - 2 dictionary results

thun⋅der⋅stone

[thuhn-der-stohn]
–noun
1. any of various stones or fossils formerly thought to be fallen thunderbolts.
2. Archaic. a thunderbolt or flash of lightning.
Also, thunder-stone.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
Cite This Source Link To thunderstone
thun·der·stone   (thŭn'dər-stōn')   
n.  
  1. Any of various mineral concretions, such as a belemnite, formerly supposed to be thunderbolts.

  2. Archaic A flash of lightning conceived as a stone; a thunderbolt.

The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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