chinbone

noun
chin·​bone | \ˈchin-ˌbōn \

Definition of chinbone 

: mandible especially : the median anterior part of the human mandible

First Known Use of chinbone

before the 12th century, in the meaning defined above

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The first known use of chinbone was before the 12th century

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chinbone

noun
chin·​bone | \ˈchin-ˈbōn, -ˌbōn \

Medical Definition of chinbone 

: jaw sense 1b especially : the median anterior part of the bone of the human lower jaw

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