Wiktionary
n. An organic fiber, which is obtained naturally, notably from a plant or animal
WordNet
n. derived from plants or animals [syn: natural fibre]
Wikipedia
Fiber or fibres (see spelling differences) are a class of hair-like materials that are continuous "'filaments"' or are in discrete elongated pieces, similar to pieces of thread. They can be used as a component of composite materials. They can also be matted into sheets to make product such as paper or felt. Fibers are of two types: natural fiber, which consists of animal and plant fibers, and man-made fiber, which consists of synthetic fibers and regenerated fibers. The earliest evidence for humans using fibers is the discovery of wool and dyed flax fibers found in a prehistoric cave in the Republic of Georgia that date back to 36,000 BP.
Usage examples of "natural fiber".
He was dressed in a suit of crimson silk slashed with a natural fiber from Mantichore.
Jaime said, as soon as she found her tongue, her fingers clutching the dark green linens that in this world weren't linens at all, but some other natural fiber she could never remember.
Chairs, couches, table, desk were of wood and natural fiber, graceful as willows.
The prayer mats were dyed red, for the glory of the god, but those used for sitting were woven of natural fiber.
He wore a hand-tailored, expensive, natural fiber suit, perhaps English wool.