knotty rhatany

knotty rhatany

noun
See under rhatany (def. 1).
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rhat·a·ny

[rat-n-ee]
noun, plural rhat·a·nies.
1.
either of two South American shrubs belonging to the genus Krameria, of the legume family, K. tiandra (knotty rhatany or Peruvian rhatany) or K. argentea (Brazilian rhatany or Pará rhatany).
2.
the root of either of these plants, used as an astringent and tonic in medicine and also to color port wine.

Origin:
1800–10; < Neo-Latin rhatania < American Spanish rataña
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Based on the Random House Dictionary, © Random House, Inc. 2012.
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