# cornerstone

> English word · Noun · frequency rank #17,333

## Definitions
1. A stone forming the base at the corner of a building.
2. Such a stone used ceremonially, often inscribed with the architect's and owner's names, dates and other details.
3. That which is prominent, fundamental, noteworthy, or central.

## Etymology
From Middle English corner ston; equivalent to corner + stone. The figurative sense is in part after Psalm 118:22, and is also quoted several times in the New Testament.

## Common misspellings (17)
`ccornerstone`, `conrerstone`, `corenrstone`, `cornerrstone`, `cornersotne`, `cornersstone`, `cornerstnoe`, `cornerstoen`, `cornerstonne`, `cornersttone`, `cornertsone`, `cornesrtone`, `cornnerstone`, `cornrestone`, `corrnerstone`, `cronerstone`, `ocrnerstone`

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