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Added 10 October 2026

breastbone

noun

In Latin: sternum Wiktionary

noun Definition from WordNet 3.1, Princeton University. More about breastbone at Wordnik → Where our words come from →

The flat bone that articulates with the clavicles and the first seven pairs of ribs.

Origin

From Middle English brust-bon, brestbon, from Old English brēostbān (“breastbone”), equivalent to breast + bone.

From Wiktionary, via Kaikki.org (CC BY-SA)

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