Fibre
Part of speech: noun
Definition: A single piece of a given material, elongated and roughly round in cross-section, often twisted with other fibres to form thread. Material in the form of fibres. Dietary fibre. Moral strength and resolve. The preimage of a given point in the range of a map.
Fiber
Part of speech: noun
Definition: A single elongated piece of a given material, roughly round in cross-section, often twisted with other fibers to form thread.A material in the form of fibers.A material whose length is at least 1000 times its width.Dietary fiber.Moral strength and resolve.The preimage of a given point in the range of a map.
Example sentence: Americans don't like to stand by while innocent people are killed and watch a human disaster unfold. It goes against our very fiber. We feel compelled to do something.