n. [ Sp. alpaca, fr. the original Peruvian name of the animal. Cf. Paco. ] 1. (Zool.) 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 ]

a. [ L. pref. im- not + pacare to quiet. See Pacate. ] Not to be appeased or quieted. [ Obs. ] Spenser. -- Im*pa"ca*bly, adv. [1913 Webster]

v. t. [ L. opacatus, p. p. of opacare. ] To darken; to cloud. [ Obs. ] Boyle. [ 1913 Webster ]

n. [ Pg., from the native name. ] 1. (Zool.) A large burrowing South American rodent (Agouti paca syn. Cuniculus paca, formerly Cœlogenys paca), having blackish brown fur, with four parallel rows of white spots along its sides; the spotted cavy. It is closely allied to the agouti and the Guinea pig and is highly esteemed as food. [ 1913 Webster ]

a. [ L. pacare to pacify. ] Placable. [ R. ] Coleridge. [ 1913 Webster ]

n. (Bot.) A species of hickory. See Pecan. [ 1913 Webster ]

a. [ L. pacatus, p. p. of pacare to pacify, fr. pax, pacis, peace. See Pay to requite, Peace. ] Appeased; pacified; placated; tranquil. [ R. ] [ 1913 Webster ]

a. Pacified; pacate; placated. [ 1913 Webster ]

n. [ L. pacatio. ] The act of pacifying; a peacemaking. Coleridge. [ 1913 Webster ]