1south·west 
/saʊθˈwɛst/ noun
/saʊθˈwɛst/ noun 1 [noncount] : the direction between south and west 2 the southwest or the Southwest : the southwestern part of a country or region
▪ A mountain range is in the southwest of the country. ; especially : the southwestern part of the U.S.
▪ These plants grow in the Southwest.
▪ A mountain range is in the southwest of the country. ; especially : the southwestern part of the U.S.
▪ These plants grow in the Southwest.
