English Reference

Word

grass

US/ˈɡɹæs/

UK/ɡɹˈɑːs/

Definitions

01green ground cover

A2 · Elementary Uncountable noun

n. a common green plant with narrow leaves that grows in fields, parks, and gardens.

n. any plant of the family Poaceae, typically characterized by narrow leaves and used as ground cover or forage.

“The children ran barefoot across the soft green grass in the park.”

“The landscaper recommended a specific blend of seed to ensure the grass remained resilient against the heavy foot traffic of the public square.”

Synonyms

02an informer

C1 · Advanced Countable noun British English · Slang

n. someone who tells the police or authorities about a person's secret or illegal activities.

n. a person who provides information to the authorities about criminal activity, especially a member of a criminal group who betrays their associates.

“The gang suspected there was a grass among them after the police raid.”

“In many underworld circles, being labelled a grass is a life-threatening accusation that leads to immediate social and physical exclusion.”

03marijuana

C1 · Advanced Uncountable noun Slang · Informal

n. a slang word for the drug marijuana.

n. a common slang term for cannabis or marijuana.

“He was arrested for possessing a small amount of grass.”

“The detective noted that the suspect used various coded terms, including grass, to discuss the distribution of narcotics over the phone.”

Synonyms

04the real world

B2 · Upper Intermediate Uncountable noun Informal · Slang

n. the outside world or reality, often used when someone has spent too much time on the internet.

n. the physical world or reality, typically used in the imperative 'touch grass' to suggest someone reconnect with nature after excessive digital engagement.

“You have been arguing on Twitter all day; you really need to go outside and touch grass.”

“The phrase 'touch grass' has become a ubiquitous online retort aimed at those whose perspectives seem warped by excessive time spent in digital echo chambers.”

Synonyms

05to inform on someone

C1 · Advanced British English · Slang

v. to tell the police or someone in charge about something bad another person did.

v. to act as an informer or to betray a person by reporting their activities to the authorities.

“He promised not to grass on his friends after they broke the window.”

“The witness was hesitant to grass on the local syndicate, fearing the inevitable repercussions of cooperating with the investigation.”

Usage

often used with 'on' before the person being reported.

06to cover with turf

C2 · Proficiency Technical

v. to cover an area of ground with grass.

v. to cover a surface with grass or turf.

“The workers began to grass the area around the new office building.”

“The project specifications required the contractor to grass the embankment immediately to prevent soil erosion during the autumn rains.”

Synonyms

Real-World Examples

“This summer saw vast tracts of parks and lawns scorched by drought in the UK, but more watering is not a sustainable solution. So what does the future hold for grass?”
The Guardian 2 Oct 2022
“Half of Britain’s green and pleasant land is covered by grasses – pasture, meadows, moorland, parks and lawns.”
The Guardian 2 Oct 2022

Word family

Related words

Idioms

In Literature

Cover for Leaves of Grass

Cover: First edition cover, via Wikimedia Commons.

Leaves of Grass · 1855-01-01 · Poetry

Author:
Walt Whitman

Walt Whitman first published this landmark poetry collection in 1855, using the title to represent the commonality and interconnectedness of all living things. The poems celebrate the beauty of the natural world, treating each individual blade of greenery as a symbol of the democratic spirit and the cycle of life.

Domains

MiningPhysics

This entry

Exam level
CambridgeCambridgeCambridge English QualificationsThe exam suite from Cambridge University Press & Assessment, from A1 Movers up to C2 Proficiency. The benchmark names double as CEFR labels.A2 KeyIELTSIELTSInternational English Language Testing SystemThe 0–9 band test co-owned by the British Council, IDP, and Cambridge. Used for university entry, work, and migration.3.0–4.0TOEFL iBTTOEFL iBTTest of English as a Foreign Language, Internet-Based TestETS's academic English test, the standard route for US university admissions. Scored 0–120, with a 1–6 scale since 2026.1–6 scale: 2.0–2.524–43TOEICTOEICTest of English for International CommunicationETS's workplace English test, big in Japan and Korea. Listening & Reading scores 10–990 and tops out at C1.225–549
Frequency
Common
Level
A2 · ElementaryOxford
Updated

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