English

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Etymology

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From thunder +‎ stone.

Noun

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thunderstone (plural thunderstones)

  1. (archaic) A thunderbolt.
  2. A stone or fossil thought to be, or be caused by, a thunderbolt striking the earth.
    • 1985, Wade Davis, The Serpent and the Rainbow, Simon & Schuster, page 94:
      Thunderstones are sacred to the vodounist, forged as they are by Sobo and Shango, the spirits of thunder and lightning.
  3. A belemnite.

References

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