[noun] 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 Synonyms:inguen
[noun] a protective structure of stone or concrete; extends from shore into the water to prevent a beach from washing away Synonyms:breakwater, groyne, mole, bulwark, seawall, jetty
[verb] build with groins; "The ceiling was groined"