alpaca

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A domesticated South American ruminant mammal (Vicugna pacos or Lama pacos), related to the llama and having fine, long wool.
• noun The silky wool of this mammal.
• noun Cloth made from alpaca.
• noun A fabric that imitates alpaca, made from various natural or synthetic fibers.

from The Century Dictionary.

• noun A mammal, the Auchenia pacos, a native of the Andes, especially of the mountains of Chili and Peru.
• noun A fabric manufactured from the hair or wool of the alpaca, either wholly or in part, or made in imitation of this, used for clothing in warm climates, for coat-linings, and very largely for umbrellas.

from the GNU version of the Collaborative International Dictionary of English.

• noun (Zoöl.) An animal of Peru (Lama paco), having long, fine, wooly hair, supposed by some to be a domesticated variety of the llama.
• noun Wool of the alpaca.
• noun A thin kind of cloth made of the wooly hair of the alpaca, often mixed with silk or with cotton.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun A sheep-like animal of the Andes, Vicugna pacos, in the camel family, closely related to the llama, guanaco, and vicuña.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun domesticated llama with long silky fleece; believed to be a domesticated variety of the guanaco
• noun wool of the alpaca
• noun a thin glossy fabric made of the wool of the Lama pacos, or made of a rayon or cotton imitation of that wool