English Dictionary

mouthguard

noun

A device that fits into the mouth over one or both arches of teeth, which is usually made of plastic. They may be used to protect aginst injury during sport or fighting, or may serve a medical purpose.

I always wear a mouthguard when playing sports.

意味（1）

A device that fits into the mouth over one or both arches of teeth, which is usually made of plastic. They may be used to protect aginst injury during sport or fighting, or may serve a medical purpose.