# mouthguard

> English word · Noun · frequency rank #95,160

## Definitions
1. A device that fits into the mouth over one or both arches of the teeth and usually made of plastic. Such devices may protect against injury during sport or fighting or may serve a medical purpose.

## Etymology
From mouth + guard.

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