# thumbnut

> English word · Noun

## Definitions
1. A nut with a knurled rim which can be turned with thumb and forefinger.
2. Synonym of wingnut.

## Etymology
From thumb + nut.

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