breastbone

Estimated CEFR level: C2 — Proficiency

Estimated from word frequency; not an official CEFR classification.

Definition

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

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

) TOM ROCHFORD: (A hand to his breastbone, bows. — Ulysses, James Joyce
The arch of her breastbone reminded you of a violoncello. — That Which Hath Wings: A Novel of the Day, Richard Dehan
Corriston shifted his weapon a little, moving the barrel upward until it pressed very firmly against the commander's breastbone. — Space Station 1, Frank Belknap Long

sternum

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