1. A protective device worn in the mouth to shield the teeth, lips, and jaw from injury during contact sports or physical activities.
Usage: Usually plural or used as a countable noun; Common in boxing, football, hockey, and martial arts

Examples

• Athletes are required to wear mouthguards during football practice to prevent dental injuries.
• The boxer inserted his mouthguards before stepping into the ring.
• Many schools provide mouthguards for students participating in contact sports.
• Dentists recommend custom-fitted mouthguards for maximum protection.
• She forgot her mouthguards at home and had to sit out the hockey game.
• Mouthguards come in different styles, from boil-and-bite to fully custom options.