The term 'Part of the Pelvis' refers to three anatomical structures: the ILIUM (5 letters), Sacrum (6 letters), and HIPBONE (7 letters). The ILIUM is the uppermost and largest part of the pelvis, located on either side of the sacrum. The Sacrum is a triangular bone at the base of the spine that connects the two ilia. The HIPBONE is the curved bone that connects the ILIUM and sacrum and forms the socket for the femur. Together, these three bones form the pelvis, which provides support for the spine and lower body.