Definition of groyne in English:

groyne

Line breaks: groyne
Pronunciation: /ɡrɔɪn
 
/
(US groin)

noun

A low wall or sturdy timber barrier built out into the sea from a beach to check erosion and drifting.
More example sentences
  • Four new groynes - timber planking walls running down the beach towards the water - will help trap sand and give greater protection to the base of the wall.
  • Visit any coastal area and you will see defence features such as groynes, sea walls and banks.
  • We're blowing all this money to build houses and ruin habitat with so-called beach renourishment and jetties, groins and seawalls.

Origin

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

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