rough horsetail

noun

Definition of rough horsetail

: a scouring rush (Equisetum hyemale)

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First Known Use of rough horsetail

1762, in the meaning defined above

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The first known use of rough horsetail was in 1762

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Cite this Entry

“Rough horsetail.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/rough%20horsetail. Accessed 21 Oct. 2020.

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