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black cohosh

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noun
  1. See under cohosh.
  2. black snakeroot.
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Origin of black cohosh

An Americanism dating back to 1820–30

cohosh

[koh-hosh, koh-hosh]
noun
  1. either of two unrelated plants of the eastern U.S., Cimicifuga racemosa (black cohosh), of the buttercup family, or Caulophyllum thalictroides (blue cohosh), of the barberry family, both used medicinally.
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Origin of cohosh

1790–1800, Americanism; < Eastern Abenaki kkwὰhas
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for black cohosh

black cohosh

noun
  1. a plant of the ranunculaceous family, Cimicifuga racemosa, which is used as a natural alternative to hormone replacement therapy
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cohosh

noun
  1. any of several North American plants, such as the blue cohosh (Caulophyllum thalictroides: family Leonticaceae) and black cohosh (Cimicifuga racemosa: family Ranunculaceae)
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Word Origin

C18: probably of Algonquian origin
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012