boneset

[ bohn-set ]
/ ˈboʊnˌsɛt /

noun

any composite plant of the genus Eupatorium, especially E. perfoliatum, of North America, having white flowers in a flat-topped cluster.

Origin of boneset

1810–20, Americanism; bone + set (v.), so named (by hyperbole) because supposed to have healing properties
Also called thoroughwort.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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British Dictionary definitions for boneset

boneset

/ (ˈbəʊnˌsɛt) /

noun

any of various North American plants of the genus Eupatorium, esp E. perfoliatum, which has flat clusters of small white flowers: family Asteraceae (composites)Also called: agueweed, feverwort, thoroughwort
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