1. (n.) One of the delicate, threadlike portions of which the tissues of plants and animals are in part constituted; as, the fiber of flax or of muscle.

2. (n.) Any fine, slender thread, or threadlike substance; as, a fiber of spun glass; especially, one of the slender rootlets of a plant.

3. (n.) Sinew; strength; toughness; as, a man of real fiber.

4. (n.) A general name for the raw material, such as cotton, flax, hemp, etc., used in textile manufactures.

cast character composition constitution essence fabric filament material mould nature quality strand stripe structure substance tendril texture thread