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)
groin -- (a curved edge formed by two intersecting vaults)
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)
Overview of verb groin
The verb groin has 1 sense
groin -- (build with groins; "The ceiling was groined")