groyne

 
Pronunciation: /grɔɪn/
(US groin)

noun

  • a low wall or sturdy timber barrier built out into the sea from a beach to check erosion and drifting.

Origin:

late 16th century: from dialect groin 'snout', from Old French groign, from late Latin grunium 'pig's snout', from Latin grunnire 'to grunt'