fibre
Americannoun
noun
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a natural or synthetic filament that may be spun into yarn, such as cotton or nylon
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cloth or other material made from such yarn
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a long fine continuous thread or filament
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the structure of any material or substance made of or as if of fibres; texture
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essential substance or nature
all the fibres of his being were stirred
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strength of character (esp in the phrase moral fibre )
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See dietary fibre
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botany
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a narrow elongated thick-walled cell: a constituent of sclerenchyma tissue
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such tissue extracted from flax, hemp, etc, used to make linen, rope, etc
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a very small root or twig
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anatomy any thread-shaped structure, such as a nerve fibre
Other Word Forms
Etymology
Origin of fibre
C14: from Latin fibra filament, entrails
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.
Light has been used for decades for long-distance communications over optical fibre - the data for this article probably travelled down a fibre optic cable at some stage.
From BBC ● Sep. 22, 2026
For example, says Sharp, with fibre, "You can't take tight turns. There are little nuances on how to structure that."
From BBC ● Sep. 22, 2026
The testing in June 2022 reportedly found Chrysotile asbestos in 10% of its samples - the same type of loose asbestos fibre claimed to be in the sample collected by Hill.
From BBC ● Aug. 20, 2026
The industry remains focused on low-margin products such as T-shirts and jeans, while rivals have moved into higher-value segments made with synthetic fibre.
From Barron's ● Aug. 5, 2026
But even if, as Cannadine contends, “Speech was the very fibre of his being,” that’s not to say that it proceeded in any natural way from that being.
From "Words Like Loaded Pistols" by Sam Leith
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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.