Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “glass”


noun (SUBSTANCE)    /ɡlɑːs/ US  /ɡlæs/
A1 [U] a hard, transparent material, used to make windows, bottles, and other objects: coloured/broken glass a glass jar/dish/ornament It's a huge window made from a single pane of glass.Glass [U] objects made from glass when thought of as a group: The museum has a fine collection of valuable glass.GlassDishes, bowls, cups and glasses under glass in a glasshouse: In cool climates you have to grow tropical plants under glass.Glass
(Definition of glass noun (SUBSTANCE) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
Focus on the pronunciation of glass

Definitions of “glass” in other dictionaries

Word of the Day


a person or group who receives money, advantages, etc. as a result of something else

Word of the Day


Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More