Middle English hachbon, alteration (resulting from incorrect division of a nachebon) of Middle English *nachebon, from Middle English nache buttock (from Anglo-French, from Late Latin natica, from Latin natis) + bon bone
15th century, in the meaning defined at sense 1
“Aitchbone.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/aitchbone. Accessed 2 Dec. 2023.
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