weed
1 Americannoun
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a valueless plant growing wild, especially one that grows on cultivated ground to the exclusion or injury of the desired crop.
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any undesirable or troublesome plant, especially one that grows profusely where it is not wanted.
The vacant lot was covered with weeds.
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Informal. a cigarette or cigar.
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Slang. a marijuana cigarette.
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a thin, ungainly person or animal.
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a wretched or useless animal, especially a horse unfit for racing or breeding purposes.
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the weed,
verb (used with object)
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to free from weeds or troublesome plants; root out weeds from.
to weed a garden.
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to root out or remove (a weed or weeds), as from a garden (often followed byout ).
to weed out crab grass from a lawn.
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to remove as being undesirable, inefficient, or superfluous (often followed byout ).
to weed out inexperienced players.
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to rid (something) of undesirable or superfluous elements.
verb (used without object)
idioms
noun
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weeds, mourning garments.
widow's weeds.
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a mourning band of black crepe or cloth, as worn on a man's hat or coat sleeve.
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Archaic. Often weeds
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a garment.
clad in rustic weeds.
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clothing.
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noun
noun
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any plant that grows wild and profusely, esp one that grows among cultivated plants, depriving them of space, food, etc
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slang
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tobacco
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marijuana
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informal a thin or unprepossessing person
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an inferior horse, esp one showing signs of weakness of constitution
verb
noun
Other Word Forms
Etymology
Origin of weed1
First recorded before 900; Middle English wed(e), weid, Old English wēod; cognate with Old Saxon wiod “weed,” Middle Dutch wiet “fern”
Origin of weed2
First recorded before 900; Middle English wed(e), Old English (ge)wǣde, wǣde “garment, clothing”; cognate with Old Saxon wād, gewādi, Old High German wāt, gewāti; cf. wadmal
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
But the selloff is grounded in reality, according to Weed.
From MarketWatch • Mar. 27, 2026
“This does not appear to reduce the potential cybersecurity sector tailwinds” from generative AI and large language models, Weed wrote.
From MarketWatch • Mar. 27, 2026
Weed pollen will also start to play a part from June until September.
From BBC • May 30, 2025
Universal and Mattel have tapped Akiva Goldsman — an Oscar-winning screenwriter known for “A Beautiful Mind” and “Cinderella Man” — to produce the picture under his banner, Weed Road.
From Los Angeles Times • Jun. 5, 2024
That, My Lord General, was one of the things we asked the Weed to look at most specifically.
From "The Assassination of Brangwain Spurge" by M.T. Anderson and Eugene Yelchin
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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.