1) Bone 2) Exclusively Anglo word 3) Exclusively Saxon word 4) Sternum 5) The sternum 6) Word of purely Anglo origin 7) Word with Anglo-Saxon origins Found on https://www.crosswordclues.com/clue/breastbone
The long flat bone that forms the center front of the chest wall. The breastbone is attached to the collarbone and the first seven ribs. Also called sternum. Found on http://www.cancer.gov/dictionary?expand=B