bone, os - rigid connective tissue that makes up the skeleton of vertebrates

corpus sternum, gladiolus - the large central part of the breastbone

manubrium - the upper part of the breastbone

xiphoid process - smallest of the three parts of the breastbone; articulates with the corpus sternum and the seventh rib

chest, pectus, thorax - the part of the human body between the neck and the diaphragm or the corresponding part in other vertebrates

axial skeleton - the part of the skeleton that includes the skull and spinal column and sternum and ribs