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English definition of “groyne”

groyne

noun [C] uk   /ɡrɔɪn/ (also groin) us  
a low wall built out from the coast into the sea, to prevent the repeated movement of the waves from removing parts of the landCoasts and beachesBays and gulfsDitches, dams and tunnels
(Definition of groyne from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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