# locknut

> English word · Noun

## Definitions
1. A nut with an inner ring made of a material with elastic properties to prevent it from slipping.
2. A second nut, screwed down onto another in order to prevent it slipping.

## Etymology
From lock + nut.

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