The story
- Middle English · derived fromchawlbone
- Middle English · inherited fromjawe bone
- English todayjawbone
From Middle English jawe bone, a partial calque of earlier Middle English chawlbone, chawylbon, chavylbone, chawle boon, chavyl bon (“jaw bone”, literally “chavel bone”), see chavel-bone; equivalent to jaw + bone.
Etymology from Wiktionary, CC BY-SA 4.0.