- any of various stones or fossils formerly thought to be fallen thunderbolts.
- Archaic. a thunderbolt or flash of lightning.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for thunderstone
He searched among the roots of this tree and found a "thunderstone."
Meunier tells of another "thunderstone" said to have fallen in North Africa.
In Notes and Queries, 2-8-92, a writer says that he had a "thunderstone," which he had brought from Jamaica.
He describes the "thunderstone" as an "agglomeration of brick, soot, unburned coal, and cinder."
The thunderstone, or thunderbolt, was supposed to have no power of harming any one who was asleep, or who wore laurel leaves.Bussy D'Ambois and The Revenge of Bussy D'Ambois
- a long tapering stone, fossil, or similar object, formerly thought to be a thunderbolt
- an archaic word for thunderbolt