groin

US /ɡrɔɪn/
UK /ɡrɔɪn/
"groin" picture
1.

the area between the abdomen and the thigh on either side of the body

:
He pulled a muscle in his groin while playing soccer.
The doctor examined the patient's groin for any swelling.
2.

the curved edge formed by the intersection of two vaults or arches

:
The architect designed a beautiful vaulted ceiling with intricate groins.
The light highlighted the elegant curve of the groin in the old church.