English

Definition of barrier reef noun from the Oxford Advanced Learner's Dictionary

 

barrier reef

 noun
noun
BrE BrE//ˌbæriə ˈriːf//
 
; NAmE NAmE//ˌbæriər ˈriːf//
 
 
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a line of rock and coral in the sea, often not far from land
See the Oxford Advanced American Dictionary entry: barrier reef