horseweed

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

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'horseweed.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Keep scrolling for more

Learn More about horseweed

Dictionary Entries near horseweed

Statistics for horseweed

Cite this Entry

“Horseweed.” The Merriam-Webster.com Dictionary, Merriam-Webster Inc., https://www.merriam-webster.com/dictionary/horseweed. Accessed 12 December 2019.

WORD OF THE DAY

belle epoque

a period of high artistic development

Test Your Vocabulary

Semantic Drift Quiz

Which of the following was once a synonym for fun?

pear hoax
golf dutch

Can you spell these 10 commonly misspelled words?

Test Your Knowledge - and learn some interesting things along the way.