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dust ball

noun
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Definition of dust ball

: a concretion composed of vegetable or mineral matter found in the intestines (as of the horse) and varying in size from a few ounces to several pounds

— called also intestinal calculus

— compare hair ball

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“Dust ball.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/dust%20ball. Accessed 29 May. 2020.

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