# Rosetta Stone

> English word · Proper noun

## Definitions
1. A large inscribed stone found near Rosetta, Egypt, in 1799, later used as a basis for understanding many previously undecipherable examples of hieroglyphic writing.
2. Any source of information crucial to interpreting.

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