Hipbones are an important part of the human anatomy and play a vital role in movement and stability. Synonyms for the word hipbones include pelvic bones, iliac bones, or coxae. These terms all refer to the two bones forming the pelvic girdle, located on each side of the lower abdomen. Another synonym for hipbones is the term hip joint, which is the ball-and-socket joint where the femur (thigh bone) connects to the pelvis. Some people might use the term waistline to refer to the area where the hipbones are located. Regardless of the term used, it is important to take care of the hips and maintain their flexibility to prevent injury and maintain mobility.