[vi.cu.na] n [Sp vicuna, fr. Quechua wik'una] (1604) 1: a wild ruminant (Vicugna vicugna syn. Lama vicugna) of the Andes from Peru to Argentina that is related to the llama and alpaca
2. a: the wool from the vicuna's fine lustrous undercoat b: a fabric made of vicuna wool; also: a sheep's wool imitation of this