{ ‖ ‖ } n. [ Sp. vicuña. Cf. Vigonia. ] (Zool.) A South American mammal (Auchenia vicunna) native of the elevated plains of the Andes, allied to the llama but smaller. It has a thick coat of very fine reddish brown wool, and long, pendent white hair on the breast and belly. It is hunted for its wool and flesh. [ 1913 Webster ]