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nut bone

noun
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Definition of nut bone

: a large transversely extended sesamoid bone behind the joint between the coronary bone and coffin bone in the foot of a horse

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“Nut bone.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/nut%20bone. Accessed 11 Aug. 2020.

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