There are 2 definitions of groin in English:

groin1

Syllabification: groin
Pronunciation: /groin
 
/

noun

1The area between the abdomen and the thigh on either side of the body.
More example sentences
  • Patients may have pain in the anterior groin, anterior thigh, buttock, greater trochanter, or medial knee.
  • Swelling and tenderness was noted in the groin and proximal thigh.
  • In femoral fractures, patients usually complain of pain in the groin, anterior thigh, or knee, as well as painful range of motion of the hip.
1.1 informal The region of the genitals.
More example sentences
  • The defender's right elbow is locked and her hand cannot strike the attacker's groin.
  • The heavy man clutched his groin in pain and fell to his knees on the ground.
  • Now he dropped the sword and she brought her knee up into the man's groin.
2 Architecture A curved edge formed by two intersecting vaults.
More example sentences
  • It is characterized by heavy, load-bearing masonry, the round-headed arch and its derivatives, the groin, and barrel vaulting.
  • Gilt threads glittered in the weave of pennants and tapestries and high overhead a gold-trimmed groin vault shouldered off the arches of a marble ceiling.
  • The corridor opened into a T-junction in a groin vault serving as a landing for a broad, dimly-lit staircase.

Origin

late Middle English grynde, perhaps from Old English grynde 'depression, abyss'.

Definition of groin in:

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Word of the day antebellum
Pronunciation: ˌantɪˈbɛləm
adjective
occurring or existing before a particular war…

There are 2 definitions of groin in English:

groin2

Syllabification: groin
Pronunciation: /
 
groin/
(also groyne)

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'.

Definition of groin in: