1.  alpaca(n = noun.substance) - wool of the alpaca;
is a kind of wool

2.  alpaca(n = noun.artifact) - a thin glossy fabric made of the wool of the Lama pacos, or made of a rayon or cotton imitation of that wool;
is a kind of cloth, fabric, material, textile

3.  alpaca(n = noun.animal) lama pacos - domesticated llama with long silky fleece; believed to be a domesticated variety of the guanaco;
is a kind of llama
is a member of genus lama, lama

1.  An animal of Peru (Lama paco), having long, fine, wooly hair, supposed by some to be a domesticated variety of the llama. [1913 Webster]

2.  Wool of the alpaca. [1913 Webster]

3.  A thin kind of cloth made of the wooly hair of the alpaca, often mixed with silk or with cotton. [1913 Webster]

alpaca, n.
1 a S. American mammal, Lama pacos, related to the llama, with long shaggy hair.
2 the wool from the animal.
3 fabric made from the wool, with or without other fibres.

Etymology:
Sp. f. Aymar{aacute} or Quechua