noun /ˈfaɪ.bə,ˈfaɪ.bɚ/
a) A single elongated piece of a given material, roughly round in cross-section, often twisted with other fibers to form thread.
The microscope showed a single blue fiber stuck to the sole of the shoe.
b) A material in the form of fibers.
The cloth is made from strange, somewhat rough fiber.
See Also: dietary fiber, fiber bundle, fiberboard, fibered, fiberglass, fiberize, fiber optics, fiberscope, fibril, fibrilar, fibrin, fibrinous, fibrinogen, fibrinolysin, fibroblast, fibrocyte, fibroid, fibroma, fibrosis, fibrositis, fibrous, fibrovascular, moral fiber, natural fiber, synthetic fiber
Wikipedia foundation.