Definition of mouthguard noun from the Oxford Advanced Learner's Dictionary

 

mouthguard

 noun
noun
BrE BrE//ˈmaʊθɡɑːd//
 
; NAmE NAmE//ˈmaʊθɡɑːrd//
 
(North American English)(British English gumshield)
 
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a cover that a sports player wears in his/her mouth to protect the teeth and gums
See the Oxford Advanced American Dictionary entry: mouthguard

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