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Word of the Day Tuesday, June 9, 2026

breastbone

/brɛstboʊn/ noun · British & US
Valid in UKValid in US
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What does breastbone mean?

noun

The breastbone is a long, flat bone in the center of the chest that protects the heart and lungs. It is also known as the sternum.

Example

"The doctor listened to the patient's heartbeat with a stethoscope pressed against their breastbone."

Definition generated by AI and curated by RJS Tech Solutions LLP.

Synonyms for breastbone

Rhymes with breastbone

Etymologically related