The term 'Quechua' refers to a language spoken by the INCA people of South America. The INCA were an ancient civilization that flourished in the Andes Mountains of Peru, Bolivia, Ecuador, and Chile. The INCA Empire was the largest empire in pre-Columbian America. The INCA language, Quechua, is still spoken today by millions of people in the Andes region. The crossword solutions for the term 'Quechua' are INCA (4 letters), QUINOA (6 letters), and INCAN (5 letters). INCA is the name of the ancient civilization, QUINOA is a grain native to the Andes region, and INCAN is an adjective used to describe something related to the INCA people or their culture.