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horseweed

noun
horse·​weed | \ ˈhȯrs-ˌwēd How to pronounce horseweed (audio) \

Definition of horseweed

1 : a common annual American composite herb (Conyza canadensis synonym Erigeron canadensis) with an erect usually hairy stem and small discoid heads of yellow disk flowers
2 : a coarse annual North American ragweed (Ambrosia trifida)

Examples of horseweed in a Sentence

Recent Examples on the Web

 Some examples are sharp point fluvellin, velvetleaf, puncturevine, horseweed, western bittercress and oxalis. — OregonLive.com, "How to defend lawns, gardens against invasive weeds," 27 Feb. 2018 Yet tolerance to 2,4-D has already been documented in several weed species that have elsewhere become glyphosate-resistant superweeds, including waterhemp and horseweed. — Brandon Keim, WIRED, "The Next Generation of GM Crops Has Arrived—And So Has the Controversy," 24 June 2014

First Known Use of horseweed

1790, in the meaning defined at sense 1

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