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white heel splitter

noun
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Definition of white heel splitter

: a large North American freshwater mussel (Lasmigona complanata) with a sharp alate process behind the umbones

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“White heel splitter.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/white%20heel%20splitter. Accessed 26 Oct. 2020.

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