The "pelvic bones" are the bones that make up the pelvis, which is the lower part of the torso and serves as a base (supporting structure) for the spine and legs. They form the base of the human skeleton.

The pelvis is made up of several bones, including the two hip bones (also known as the coxal bones), the sacrum, and the coccyx. These bones work together to provide support and stability for the trunk of the body, allowing movement and protecting the internal organs.