The jawbone; the bone of the lower jaw.
From 'chaw' (jaw, from Old English 'ceaw') and 'bone'. This compound word directly describes the bone structure of the jaw used for chewing, combining two simple Germanic roots.
Anatomists eventually replaced 'chawbone' with the more scientific term 'mandible,' but the word persisted in rural English dialects where speakers preferred body-part language rooted in actual function rather than Latin terminology.
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