vicuña Syllabification: (vi·cu·ña)Pronunciation: /vīˈk(y)o͞onə və-, ˈko͞onyə/Definition of vicuña noun a wild relative of the llama, inhabiting mountainous regions of South America and valued for its fine silky wool. Vicugna vicugna, family Camelidae cloth made from vicuña wool or an imitation of it. Origin: early 17th century: from Spanish, from Quechuavicuña in other Oxford dictionaries Definition of vicuña in the British & World English dictionary