fiber

noun

1. a slender and greatly elongated substance capable of being spun into yarn
2. coarse, indigestible plant food low in nutrients; its bulk stimulates intestinal peristalsis
3. any of several elongated, threadlike cells (especially a muscle fiber or a nerve fiber)
4. the inherent complex of attributes that determines a persons moral and ethical actions and reactions"education has for its object the formation of character"
5. a leatherlike material made by compressing layers of paper or cloth