fibreglass

British

/ ˈfaɪbəˌɡlɑːs /

noun

material consisting of matted fine glass fibres, used as insulation in buildings, in fireproof fabrics, etc
a fabric woven from this material or a light strong material made by bonding fibreglass with a synthetic resin; used for car bodies, boat hulls, etc

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

While the museum representation is scrupulously faithful to what is known of the original vessel's design and dimensions, it was built largely with fibreglass and other man-made materials.

From Barron's • Apr. 28, 2026

Instead, he repurposed a fibreglass structure originally used during the 2012 London Olympics to hide generators.

From BBC • Apr. 14, 2026

Cirino doesn't want her daughter breathing in fibreglass or other plastics.

From BBC • Mar. 16, 2026

On the way home from a game of rugby in his fibreglass Lotus, a tyre blowout sent him off the road and into a tree.

From BBC • Jun. 26, 2025

Data travels through hair-thin fibreglass wires, often grouped in pairs and protected by different layers of plastic and copper depending on how close the cables are to the shore.

From BBC • Feb. 26, 2025

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023