southwest/ˌsaʊθ'west/

n. [usu. the ~] the direction or area between south and west

n. [常the ~] 西南；西南方；西南部：Yunnan Province is located in the southwest of China. 云南省位于中国的西南。

构词south + west

用法southwest还可作a. 和ad.，用法参见south。