noun ·Rare ·Advanced level

Definitions

Noun

1. 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. US

Synonyms

All synonyms

gumshield

Etymology

From mouth + guard.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.