1. (

• groin ,
• inguen

) the crease at the junction of the inner part of the thigh with the trunk together with the adjacent region and often including the external genitals ;

2. (

• groin ,

) a curved edge formed by two intersecting vaults ;

3. (

• breakwater ,
• groin ,
• groyne ,
• mole ,
• bulwark ,
• seawall ,
• jetty

) a protective structure of stone or concrete; extends from shore into the water to prevent a beach from washing away ;

1. (

• groin

) build with groins; "The ceiling was groined" ;