(no plural form attested)
Due to the substitution of the correct buccal (“of or pertaining to the cheek or mouth”) with its homophone and etymological relation buckle (“fastening metal rim”).
"buckle-cavity." YourDictionary, n.d. Web. 23 June 2018. <http://www.yourdictionary.com/buckle-cavity>.
buckle-cavity. (n.d.). Retrieved June 23rd, 2018, from http://www.yourdictionary.com/buckle-cavity
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