fibre

US /ˈfaɪ.bɚ/
UK /ˈfaɪ.bɚ/
"fibre" picture
1.

a thread or filament from which a vegetable tissue, mineral substance, or textile is formed

:
Cotton fibres are used to make fabric.
The rope was made of strong synthetic fibres.
2.

dietary material containing substances such as cellulose, lignin, and pectin, which are resistant to the action of digestive enzymes

:
Eating enough fibre is important for a healthy digestive system.
Whole grains are a good source of dietary fibre.