Millu (Aymara for a kind of salpeter / light brown, reddish, fair-haired, dark chestnut, Ref Bertonio aymara.ucb.edu.bo Quechua for salty, Teofilo Laime Ajacopa, Diccionario Bilingüe Iskay simipi yuyayk'ancha, La Paz, 2007 (Quechua-Spanish dictionary) Hispanicized spelling Millo) is a mountain in the Wansu mountain range in the Andes of Peru, about 5100 meters high.