Noun breastbone has 1 sense

1. sternum, breastbone - the flat bone that articulates with the clavicles and the first seven pairs of ribs
   --₁ is a kind of bone, os
   --₁ is a part of thorax, chest, pectus; axial skeleton
   --₁ has parts: gladiolus, corpus sternum; manubrium; xiphoid process
   

Breastbone

Noun:

1. A long, flat bone located in the center of the chest, also known as the sternum.

Example sentences:

• He felt a sharp pain in his breastbone after the accident.
• The doctor pressed on her breastbone to check for any abnormalities.

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