Wiktionary
breast bone
n. (alternative spelling of breastbone English)
Usage examples of "breast bone".
One of the ungodly leapt upon Joseph while he was reloading, and though I put a ball through his chest he impaled poor Joseph from breast bone to spine with that terrible spear, before himself falling dead.
She threw the body back over her right arm, bones cracking, while with her left hand she split the breast bone and tore open the ribs, and reached through the hot bleeding cavity to pull the heart free.