mouthguard

noun

A protective piece, usually plastic, worn inside the mouth to cover the upper or lower teeth, or both.

Example sentence

“The dentist advised him to wear a mouthguard during rugby matches.”

Worn in contact sports, and also at night to stop tooth grinding.

Related words

shinguardA protective pad worn over the front of the lower leg, especially during sports.gogglesProtective glasses with a flexible frame that fits tightly around the eyes.stopwatchA watch that can be started and stopped to measure exactly how much time has passed.helmetA strong covering worn on the head for protection, historically part of a soldier's armor.scoreboardA big display at a game or competition that shows how many points each side has.cleatsAthletic shoes fitted with studs on the soles for better grip.