noun, often attributive
\ ˈgras How to pronounce grass (audio) \

Definition of grass

 (Entry 1 of 3)

1 : herbage suitable or used for grazing animals
2 : any of a large family (Gramineae synonym Poaceae) of monocotyledonous mostly herbaceous plants with jointed stems, slender sheathing leaves, and flowers borne in spikelets of bracts
3 : land (such as a lawn or a turf racetrack) covered with growing grass keep off the grass the horse had never won on grass
4 grasses plural : leaves or plants of grass
5 : a state or place of retirement put out to grass
6 [short for grasshopper, rhyming slang for copper] slang, British : a police informer
7 : electronic noise on a radarscope that takes the form of vertical lines resembling lawn grass
8 : marijuana


grassed; grassing; grasses

Definition of grass (Entry 2 of 3)

transitive verb

1 : to feed (livestock) on grass sometimes without grain or other concentrates
2 : to cover with grass especially : to seed to grass

intransitive verb

1 : to produce grass
2 slang, British : inform sense 1 often used with on


biographical name
\ ˈgräs How to pronounce Grass (audio) \

Definition of Grass (Entry 3 of 3)

Günter Wilhelm 1927–2015 German writer

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Other Words from grass


grassless \ ˈgras-​ləs How to pronounce Grass (audio) \ adjective
grasslike \ ˈgras-​ˌlīk How to pronounce Grass (audio) \ adjective

Synonyms for grass

Synonyms: Verb

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Examples of grass in a Sentence

Noun They were smoking some grass.
Recent Examples on the Web: Noun And in Vermont, where dairy farms once seemed to be everywhere, grass-roots movements from Brattleboro to Lake Champlain have begun attracting and encouraging Black farmers and other farmers of color., "Black farmers seek to put down new roots in New England," 10 Apr. 2021 Two Chicks California food industry veterans Shannon Ronan and Breelyn MacDonald are behind the incredibly tender, grass-fed jerky and turkey jerky, now available in new flavors like Carne Asada and Habanero. Flora Tsapovsky, Southern Living, "Put These Under-the-Radar Beef Jerky Brands on Heavy Rotation, ASAP," 9 Apr. 2021 Every week that potential challengers deliberate over whether to enter the race gives Mr. Kemp more time to make his case to grass-roots conservatives. New York Times, "How Brian Kemp Is Rebounding Against Trump’s Wrath," 8 Apr. 2021 That’s why several grass-roots initiatives have recently sprung up to bring shots to people too vulnerable to leave home, my colleague Lila Seidman reports. Amina Khan Staff Writer, Los Angeles Times, "Coronavirus Today: California’s new vaccination milestone," 1 Apr. 2021 Instead, the most effective ways to support Asian massage workers is to support the campaigns of grass-roots migrant and labor organizations, in the U.S. and globally, that know what workers need. Elena Shih, Star Tribune, "How to protect massage workers," 29 Mar. 2021 This allows the grass to fertilize in the winter, thus boosting growth in the spring and summer. Melissa Nott,, "How to aerate your lawn," 28 Mar. 2021 Night after night in 2019, shadows emerged from the tall grass and grew into long silhouettes as migrants walked toward the headlights of his truck begging for water. Arelis R. Hernández, Washington Post, "Immigrants are crossing the US Mexico border in large numbers," 27 Mar. 2021 The rooftop dog-run was designed so that the porous artificial grass drains directly into a catch basin underneath. Steve Rubenstein, San Francisco Chronicle, "Take a tour through S.F.'s new, $77 million animal shelter, complete with a dog toilet," 26 Mar. 2021 Recent Examples on the Web: Verb Berea Community Outreach now encompasses a long list of programs, from a food pantry and Dinner to Your Door to grass cutting and snowplowing for seniors and the disabled. cleveland, "Berea Community Outreach anchors city’s help to residents: Community Voices," 4 Jan. 2021 Not wanting to miss out on an opportunity to embarrass themselves in public, many of our overzealous police forces have launched online contact forms so people can grass on their neighbors. Charlie Peters, National Review, "Coronavirus Has Exposed Britain’s Snitches and Police Tyrants," 8 Apr. 2020 More of the area around the platform has been grassed, adding even more seating and picnicking areas. John Davis, azcentral, "End of the 'stampede' and other upgrades to greet patrons at Waste Management Phoenix Open," 27 Jan. 2020 Robotic lawn mowers like the Honda Miimo ($2,499); Robomow ($1,299); and Worx Landroid ($999) are to grass what the Roomba and its ilk are to carpet. Maria Carter, Country Living, "The Roomba for Lawns Is a Yard Work Game-Changer," 19 Apr. 2017 Related stories from Star-Telegram Hamels delivers gem as Rangers sweep Mariners Beyond a wild-card race, Rangers from Venezuela in dire fight for family and country Rangers’ new ballpark won’t look like Minute Maid Park, but will grass grow? Jeff Wilson, star-telegram, "Has DeShields raced his way into Rangers’ 2018 lineup?," 21 Sep. 2017 How long should grass get before your town issues a warning or even a fine? Linda Kinsey,, "How should your community handle homeowners whose lawns are overgrown? Share your comments," 21 June 2017 Robotic lawn mowers like the Honda Miimo ($2,499); Robomow ($1,299); and Worx Landroid ($999) are to grass what the Roomba and its ilk are to carpet. Maria Carter, Country Living, "The Roomba for Lawns Is a Yard Work Game-Changer," 19 Apr. 2017

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

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First Known Use of grass


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


circa 1500, in the meaning defined at transitive sense 1

History and Etymology for grass


Middle English gras, from Old English græs; akin to Old High German gras grass, Old English grōwan to grow

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Time Traveler for grass

Time Traveler

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

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Statistics for grass

Last Updated

12 Apr 2021

Cite this Entry

“Grass.” Dictionary, Merriam-Webster, Accessed 14 Apr. 2021.

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More Definitions for grass



English Language Learners Definition of grass

 (Entry 1 of 2)

: plants that have narrow green leaves, that are eaten by cows, sheep, horses, etc., and that are commonly grown on lawns and in gardens
: a particular type of grass
British slang : a person who gives information to the police about the criminal activity of other people : a police informer



English Language Learners Definition of grass (Entry 2 of 2)

: to cover (an area) with grass


\ ˈgras How to pronounce grass (audio) \

Kids Definition of grass

1 : any of a large group of green plants with jointed stems, long slender leaves, and stalks of clustered flowers
2 : plants eaten by grazing animals
3 : land (as a lawn) covered with growing grass

Other Words from grass

grasslike \ -​ˌlīk \ adjective


\ ˈgras How to pronounce grass (audio) \

Medical Definition of grass

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