Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “fibreglass”

fibreglass

noun [U] uk UK (US fiberglass)   /ˈfaɪ.bəˌɡlɑːs/ us    /-bɚˌɡlæs/
a strong, light material made by twisting together small threads of glass and plastic, used especially for structures such as cars and boats: a fibreglass hull/speedboatGlass
(Definition of fibreglass from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of fibreglass?
Add Cambridge dictionaries to your browser to your website

Definitions of “fibreglass” in other dictionaries

Word of the Day

roost

When birds roost, they go somewhere to rest or sleep.

Word of the Day

Blog

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