groin

a protective structure of stone or concrete

石头或混凝土的保护结构

extends from shore into the water to prnt a beach from washing away

从岸边伸入水中以防海滩被冲走

breakwater

groyne

mole

bulwark

seawall

jetty

a curved edge formed by two intersecting vaults

两个相交的拱顶形成的弯曲边缘

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

皱褶内侧与躯干及邻近部位结合处的皱褶，通常包括外

inguen

build with groins

用腹股沟建造

The ceiling was groined

天花板被挖开了