# thunderstone

> English word · Noun

## Definitions
1. A thunderbolt.
2. A stone or fossil thought to be, or be caused by, a thunderbolt striking the earth.
3. A belemnite.

## Etymology
From thunder + stone.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/thunderstone