Pronunciation: (al-pak'u),[key] —n. 1. a domesticated South American hoofed mammal, Lama pacos, having long, soft, silky fleece, related to the llama and believed to be a variety of the guanaco.
2. the fleece of this animal.
3. a fabric or yarn made of it.
4. a glossy, commonly black woolen fabric with cotton warp.
5. a crepe fabric made of rayon and acetate yarn in imitation of alpaca wool cloth.