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Related to fibre: Dietary fibre
1. a natural or synthetic filament that may be spun into yarn, such as cotton or nylon
2. cloth or other material made from such yarn
a. a narrow elongated thick-walled cell: a constituent of sclerenchyma tissue
b. such tissue extracted from flax, hemp, etc., used to make linen, rope, etc.
c. a very small root or twig
4. Anatomy any thread-shaped structure, such as a nerve fibre