According to Reference.com, the loin is situated on the human body right below the pelvis, below the rib cage. The region of the human body known as the “loins” refers specifically to the sides that encompass the genitalia below the ribs.
The term “loin” or “loins” is also used to describe the region of the anatomy that is covered by underwear and the region of the human body below the belt. According to Reference.com, the loin cloth, a different name for an undergarment, got its name from the region it covers, which includes the genitalia and the pelvic region.
