breastbone
breast·bone
noun
Origin
From Middle English brust-bon, brestbon, from Old English brēostbān (“breastbone”), equivalent to breast + bone.
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Parts
WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.