There are 2 definitions of groin in English:


Line breaks: groin
Pronunciation: /grɔɪn


  • 1The area between the abdomen and the upper 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: she kicked him in the groin
    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.
    crotch, crutch, genitals; lap
  • 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.


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

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