Also found in: Thesaurus, Medical, Encyclopedia, Wikipedia.


 (thûr′ō-wûrt′, -wôrt′, thûr′ə-, thŭr′-)

[thorough, through (from the fact that its branches appear to grow through the leaves) + wort.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Plants) another word for boneset
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014



any composite plant of the genus Eupatorium, esp. E. perfoliatum, of North America, having white flowers in a flat-topped cluster. Also called thoroughwort.
[1810–20, Amer.]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.thoroughwort - perennial herb of southeastern United States having white-rayed flower headsthoroughwort - perennial herb of southeastern United States having white-rayed flower heads; formerly used as in folk medicine
Eupatorium, genus Eupatorium - large genus of chiefly tropical herbs having heads of white or purplish flowers
herb, herbaceous plant - a plant lacking a permanent woody stem; many are flowering garden plants or potherbs; some having medicinal properties; some are pests
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
Eupatorium altissimum L.; Tall Boneset, Tall Thoroughwort; Old-field along S.
I climb the mountain to collect vetches and ferns; By a side path, secluded thoroughwort bloom in bounty.
Ironweed, goldenrod, dock, thoroughwort, and vervain are examples of this most difficult group to eradicate.
(spike rushes) yes OBL Eupatorium serotinum (late-flowering thoroughwort) yes FAC Penthorum sedoides (ditch stonecrop) yes OBL Polygonum spp.