Anatomy . the fold or hollow on either side of the front of the body where the thigh joins the abdomen.

the general region of this fold or hollow.

Architecture . the curved line or edge formed by the intersection of two vaults.

Also, groyne. a small jetty extending from a shore to prevent beach erosion.

Architecture . to form with groins.

noun

inguen , inguina , genitals , privates , private parts *