pile 3 
(pīl)
(pīl)n.
1.
a. Cut or uncut loops of yarn forming the surface of certain fabrics, such as velvet, plush, and carpeting.
b. The surface so formed.
2. Soft fine hair, fur, or wool.
[From Middle English piles(attested only in plural) downy hair, downy plumage, partly from Anglo-Norman peil, pil, hair, coat (as of a horse), cloth with a thick nap, and partly from Latin pilus, hair (Anglo-Norman, from Latin).]
piled adj.