English Reference

Word

glass

Phoneticsglass

US/ˈɡɫæs/

UK/ɡlˈɑːs/

Definitions

01the material

A1 · Beginner Uncountable noun Science

n. a hard, clear material that is used to make things like windows, bottles, and mirrors.

n. an inorganic, amorphous, and typically transparent solid made by fusing silica with various additives.

“Be careful not to step on the broken glass on the kitchen floor.”

“The architect specified a specialized type of tempered glass to ensure the skyscraper's facade could withstand extreme wind pressure.”

Synonyms

02drinking vessel

A1 · Beginner Countable noun

n. a container made of glass or plastic that you use for drinking.

n. a drinking vessel, typically cylindrical and without a handle, made of glass or similar translucent material.

“He poured a cold glass of orange juice for his guest.”

“The waiter polished each wine glass until it sparkled under the restaurant's dim ambient lighting.”

Synonyms

tumblercupgoblet

03camera lenses

B2 · Upper Intermediate Uncountable noun Photography Informal · Technical

n. the lenses used in a camera or other optical equipment.

n. a collective term for high-quality optical lenses used in photography or cinematography.

“Professional photographers spend a lot of money on high-quality glass for their cameras.”

“While the camera body is important, most cinematographers argue that investing in superior glass yields a more significant impact on image quality.”

Synonyms

04a mirror

C1 · Advanced Countable noun Literary

n. a surface that reflects your image, like a mirror.

n. a reflective surface, typically made of glass with a metallic backing; a mirror.

“She paused to check her hair in the glass before entering the room.”

“The protagonist stared into the glass, barely recognizing the weathered face that looked back at him after years of travel.”

Synonyms

mirrorlooking-glass

05to use binoculars

C1 · Advanced Technical · Informal

v. to look at something through binoculars or a telescope.

v. to scan or observe an area using optical instruments such as binoculars or a spotting scope.

“The birdwatcher spent hours glassing the trees for a rare owl.”

“The hunters spent the early morning glassing the distant ridges, hoping to spot movement before the sun rose too high.”

Synonyms

06to attack with a glass

C2 · Proficiency British English · Slang · Vulgar

v. to hit someone in the face with a drinking glass.

v. to strike a person with a drinking glass, often broken, with the intent to cause severe injury.

“The man was arrested after he tried to glass someone during the fight.”

“The defendant was charged with grievous bodily harm after he allegedly glassed a patron during a heated argument at the pub.”

Usage

Uncountable when referring to the material itself; countable when referring to a drinking container or a specific lens.

Word family

ADJECTIVE

Related words

Idioms

Domains

ComputingPhotographySports

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.A1 MoversIELTSIELTSInternational English Language Testing SystemThe 0–9 band test co-owned by the British Council, IDP, and Cambridge. Used for university entry, work, and migration.2.0–3.0TOEFL 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: 1.0–1.50–23TOEICTOEICTest of English for International CommunicationETS's workplace English test, big in Japan and Korea. Listening & Reading scores 10–990 and tops out at C1.120–224
Frequency
Very common
Level
A1 · BeginnerOxford
Updated

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