The pelvic bones are a group of bones located in the lower torso of the human body. They include the sacrum (5 letters), which is a triangular bone at the base of the spine, the ilia (4 letters), which are two large, fan-shaped bones that form the sides of the pelvis, and the pubes (5 letters), which are two curved bones that form the front of the pelvis. Together, these three bones form the bony structure of the pelvis.