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

 

breakwater

 noun
noun
BrE BrE//ˈbreɪkwɔːtə(r)//
 
; NAmE NAmE//ˈbreɪkwɔːtər//
 
Coastlines and the sea
 
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a wall built out into the sea to protect the shore or harbour from the force of the waves See related entries: Coastlines and the sea
See the Oxford Advanced American Dictionary entry: breakwater