Other forms: fibres
Fibre is the rough part of plants that keeps digestion moving. Dietary fibre, high in fibre, more fibre.
It passes through undigested, adding bulk and feeding gut bacteria, and most people in Britain eat well under the recommended thirty grams a day. Soluble and insoluble fibre do different jobs. This is the British spelling; American writes fiber. Note optical fibre; moral fibre; and that fibre also names any thread-like structure, from muscle to carbon.
1nounfibreThe rough part of plants that keeps digestion moving.
“About thirty grams of fibre a day is the target.”
2nounthreadAny thread-like structure.
“The old rope had worn thin, and loose fibres were sticking out all along it.”
fibre is a thread or roughage.
Also accepted in games: fiber
French fibre comes from Latin fibra, a filament or entrail. The word covers threads of every kind, from muscle fibre to fibre optics.
Latin
fibra
French
fibre
English, today
fibre
From French fibre, from Old French -, from Latin fibra.
Etymology from Wiktionary, CC BY-SA