noun (1)
\ ˈwēd How to pronounce weed (audio) \

Definition of weed

 (Entry 1 of 3)

1a(1) : a plant that is not valued where it is growing and is usually of vigorous growth especially : one that tends to overgrow or choke out more desirable plants
(2) : a weedy growth of plants
b : an aquatic plant especially : seaweed
c(1) : tobacco products
(2) : marijuana
2a : an obnoxious growth, thing, or person
b : something like a weed in detrimental quality especially : an animal unfit to breed from


weeded; weeding; weeds

Definition of weed (Entry 2 of 3)

intransitive verb

: to remove weeds or something harmful

transitive verb

1a : to clear of weeds weed a garden
b(1) : to free from something hurtful or offensive
(2) : to remove the less desirable portions of
2 : to get rid of (something harmful or superfluous) often used with out


noun (2)

Definition of weed (Entry 3 of 3)

1 : garment often used in plural
2a : dress worn as a sign of mourning (as by a widow) usually used in plural
b : a band of crape worn on a man's hat as a sign of mourning usually used in plural

Examples of weed in a Sentence

Verb We need to weed the garden.

First Known Use of weed

Noun (1)

before the 12th century, in the meaning defined at sense 1a(1)


before the 12th century, in the meaning defined at intransitive sense

Noun (2)

before the 12th century, in the meaning defined at sense 1

History and Etymology for weed

Noun (1)

Middle English, from Old English wēod weed, herb; akin to Old Saxon wiod weed

Noun (2)

Middle English wede, from Old English wǣd, gewǣde; akin to Old Norse vāth cloth, clothing and perhaps to Lithuanian austi to weave

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Time Traveler for weed

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The first known use of weed was before the 12th century

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Cite this Entry

“Weed.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/weed. Accessed 20 Sep. 2021.

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More Definitions for weed



English Language Learners Definition of weed

: to remove weeds from (an area of land, such as a garden)


\ ˈwēd How to pronounce weed (audio) \

Kids Definition of weed

 (Entry 1 of 2)

: a plant that tends to grow where not wanted and to prevent the growth of more desirable plants usually by taking up space


weeded; weeding

Kids Definition of weed (Entry 2 of 2)

1 : to remove weeds from I need to weed the garden.
2 : to get rid of what is not wanted She's weeding out the old computer files.

More from Merriam-Webster on weed

Nglish: Translation of weed for Spanish Speakers

Britannica English: Translation of weed for Arabic Speakers

Britannica.com: Encyclopedia article about weed


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