Either of a pair of bones forming the two sides of the pelvis.The pelvic diaphragm is a sheet of muscles that run from the anterior pelvis at the posterior surface of the symphysis pubis to the ischial spine and coccyx....
The remainder of the ischium, joins with the pubis to form the obturator foramen.
The pubis carries the symphysis pubis, which is a joint connecting the right and left coxal bones.
Origin
Late 16th century: from Latin os pubis 'bone of the pubes'.