1
: any of various stones (such as a meteorite or an ancient artifact) regarded as having been cast to the earth as thunderbolts
2

Examples of thunderstone in a Sentence

Recent Examples on the Web
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There’s also a dungeon with a bunch of nasty monsters, and the eponymous Thunderstone which everyone is after. — Jonathan H. Liu, WIRED, 10 Sep. 2010

Word History

First Known Use

1598, in the meaning defined at sense 2

Time Traveler
The first known use of thunderstone was in 1598

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Cite this Entry

“Thunderstone.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/thunderstone. Accessed 30 Sep. 2026.

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