fibre

noun fibres · fiber

1. countable A single piece of a given material, elongated and roughly round in cross-section, often twisted with other fibres to form thread. The microscope showed several different fibres stuck to the sole of the shoe.
2. uncountable Material in the form of fibres. The cloth was made from strange, somewhat rough fibre.
3. countable, uncountable Dietary fibre. Fresh vegetables are a good source of fibre.
4. countable, uncountable Moral strength and resolve. The ordeal was a test of everyone’s fibre.
5. countable, uncountable The preimage of a given point in the range of a map. Under this map, any two values in the fibre of a given point on the circle differ by 2π.
6. countable, uncountable Said to be of a morphism over a global element: The pullback of the said morphism along the said global element.
7. countable, uncountable A kind of lightweight thread of execution.
8. countable, uncountable A long tubular cell found in bodily tissue. It is the deeper parts of such cells which give rise to delicate muscular fibres or networks of fibres, while the superficially placed body of the cell myoblast), the part which produces the above, performs other functions, and usually bears a cilium.