breastbone

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breastbone /ˈbrɛstˌboʊn/ noun
plural breastbones
breastbone
/ˈbrɛstˌboʊn/
noun
plural breastbones
Learner's definition of BREASTBONE
[count]
: a flat, narrow bone in the middle of the chest to which the ribs are connected
called also sternum
see picture at human
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