Chile (chil'ē, Span. chē'lā) [key], officially Republic of Chile, republic (2005 est. pop. 15,981,000), 292,256 sq mi (756,945 sq km), S South America, west of the continental divide of the Andes Mts. Chile is bordered by Peru on the north, Bolivia on the northeast, Argentina on the east, and the Pacific Ocean on the west and south. Santiago is the capital and the largest city.