n. (US fiber)
1. Biol. any of the threads or filaments forming animal or vegetable tissue and textile substances.
2 a piece of glass in the form of a thread.
3 a a substance formed of fibres. b a substance that can be spun, woven, or felted.
4 the structure, grain, or character of something (lacks moral fibre).
5 dietary material that is resistant to the action of digestive enzymes; roughage.
Phrases and idioms:
fibre optics optics employing thin glass fibres, usu. for the transmission of light, esp. modulated to carry signals.
Derivatives:
fibred adj. (also in comb.). fibreless adj. fibriform adj.
Etymology: ME f. F f. L fibra