The Collaborative International Dictionary of English v.0.48:
Llullaillaco \Llullaillaco\ prop. n. A mountain in Argentina and Chile, 22,057 feet high. proper name [WordNet 1.5]WordNet (r) 3.0 (2006):
Llullaillaco n 1: a mountain in the Andes on the border between Argentina and Chile (22,057 feet high)