Definition of jawbone noun from the Oxford Advanced Learner's Dictionary

 

jawbone

 noun
noun
BrE BrE//ˈdʒɔːbəʊn//
 
; NAmE NAmE//ˈdʒɔːboʊn//
 
Skeleton and muscles
 
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the bone that forms the lower jaw synonym mandible See related entries: Skeleton and muscles
See the Oxford Advanced American Dictionary entry: jawbone