English Reference

Word

plaster

Phoneticsplas·ter, stress on the first syllable

US/ˈpɫæstɝ/

UK/plˈɑːstɐ/

Definitions

01wall coating

B1 · Intermediate Uncountable noun

n. a soft mixture of sand, water, and lime that gets hard when it dries, used to make walls and ceilings smooth.

n. a composition of lime or gypsum, sand, and water that hardens upon drying, used for coating internal walls and ceilings.

“The old plaster on the bedroom ceiling was starting to crack and fall off.”

“The restoration team had to strip away layers of wallpaper to reach the original lime plaster, which required delicate repair work to preserve the ornate cornicing.”

Synonyms

02adhesive bandage

B1 · Intermediate Countable noun Medicine British English

n. a small piece of sticky material used to cover a minor cut on your skin.

n. a small, flexible adhesive strip used to protect minor wounds from infection and debris.

“I cut my finger while chopping onions, so I need to put a plaster on it.”

“The school nurse applied a waterproof plaster to the child's scraped knee before sending him back out to the playground.”

Teaching tip

In American English, this is almost exclusively called a 'Band-Aid' or a 'bandage'.

Synonyms

03medical cast

B2 · Upper Intermediate Uncountable noun Medicine

n. a hard white cover put around a broken bone to keep it still while it heals.

n. a rigid dressing, typically made of plaster of Paris or fibreglass, used to immobilise a fractured limb.

“He had to wear a plaster on his leg for six weeks after the skiing accident.”

“Once the swelling had subsided, the doctor replaced the temporary splint with a heavy plaster to ensure the bone remained perfectly aligned during the healing process.”

Synonyms

04to cover a surface

B2 · Upper Intermediate

v. to cover a surface with a thick layer of something, like posters or mud.

v. to cover a surface extensively or to coat something with a thick, often viscous, layer of a substance.

“The teenagers plastered their bedroom walls with posters of their favourite bands.”

“By the end of the election cycle, every available inch of the city's hoardings had been plastered with competing political advertisements.”

Synonyms

Real-World Examples

“I’ve also been known to use one for speedy DIY, drying plaster and paint faster.”
The Guardian 30 Sept 2026
“Any advice?” As we turned the car round, while rummaging for plasters in the glove box, we got another message.”
The Guardian 14 Sept 2026

Etymology

From Middle English plaster, plastre, from Old English plaster, from late Latin plastrum, shortened from Classical Latin emplastrum (“a plaster, bandage”); later reinforced by Anglo-Norman plastre. The verb is from Middle English plastren, from the noun.

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

Word family

NOUN

plaster(B2)

ADJECTIVE

Idioms

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.B2 FirstIELTSIELTSInternational English Language Testing SystemThe 0–9 band test co-owned by the British Council, IDP, and Cambridge. Used for university entry, work, and migration.5.5–6.5TOEFL 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: 4.0–4.572–94TOEICTOEICTest of English for International CommunicationETS's workplace English test, big in Japan and Korea. Listening & Reading scores 10–990 and tops out at C1.785–944
Frequency
Frequent
Level
B2 · Upper Intermediate
Updated

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