# capstone

> English word · Noun · IPA /ˈkæpˌstoʊn/ · frequency rank #42,048

## Definitions
1. Any of the stones making up the top layer of a wall; a coping stone.
2. A crowning achievement, culmination or finishing touch.

## Etymology
From Middle English capston; equivalent to cap + stone.

## Easily confused with
- **Capone** (https://plainspell.com/en/vs/capone-vs-capstone)

## Common misspellings (12)
`acpstone`, `cappstone`, `capsotne`, `capsstone`, `capstnoe`, `capstoen`, `capstonne`, `capsttone`, `captsone`, `casptone`, `ccapstone`, `cpastone`

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