2 definitions found
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
Breastbone \Breast"bone`\ (br[e^]st"b[=o]n`), n.
The bone of the breast; the sternum.
From WordNet r 1.6 [wn]:
breastbone
n : the flat bone that articulates with the clavicles and the
first seven pairs of ribs [syn: {sternum}]
more about breastbone
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