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groin

groin

1 9.1
A wall built from the shore into the sea to stop sand washing away
  • noun
  • /ɡrɔɪn/
  • Specialized
translation icon : espigón
  • Groins and jetties built perpendicular to the shore intercept shifting sand on the updrift side, but deny sand to the opposite, or downdrift, shoreline.
  • groins and jetties
  • groins and seawalls
  • groins and breakwaters

Examples

  • But neither of these things can happen if you build immovable structures like buildings, boardwalks, groins, and seawalls on a barrier beach that is only twenty blocks wide.

    Blog text (11)
  • The sand apparently came from offshore rather than alongshore, because these sites are isolated from adjacent beaches by groins.

    Academic text (2008)
  • The beach to the north of each groin.

    Academic text (2008)
  • Let's hope that the groin can be removed from Oregon Inlet.

    Blog text (13)
  • All of the beaches nourished with marble gravel are within groin compartments.

    Academic text (2008)
  • The guidelines also contain specific use standards that prohibit erosion control structures such as bulkheads, seawalls, revetments, jetties, groins, and breakwaters.

    Academic text (1991)
  • In addition, structural measures such as groins, bulkheads, and rip-rap can have negative impacts on the physical and aesthetic characteristics of beaches by reducing beach width, disrupting sand supplies, and limiting recreational use of the beach.

    Academic text (2000)
  • The annual erosion rate downdrift of groins and bulkheads constructed at Stone Harbor, New Jersey, was thirty-six meters during the twelve years after their construction (Nordstrom 1988).

    Academic text (1990)
  • The construction of several groins along the coastline has helped to prevent serious beach erosion.

  • Engineers designed a series of groins to trap sand and maintain the beach's natural shape.

Synonyms

jetty
vsgroin
10 5.1

A long wall that goes from the shore into the sea to protect the coast from waves

is narrower and refers mainly to projections that block sediment and prevent beach erosion
groyne
vsgroin
  • UK
1 9.9

A low stone or concrete wall that sticks out from a beach to stop the sea from washing away sand

is identical in meaning but is an alternative regional spelling

Compounds

A painful area where the leg meets the lower belly, often from a strain or injury

Surface Forms

groin singular
groins plural

Etymology

The coastal groin (sometimes spelled groyne) comes from a French word for something that 'sticks out', like a 'snout', so the name suits the short wall that juts into the sea to stop sand moving.