WordNet sense 1 (the compass point midway between south and west; at 225 degrees):

southwestward, sou'-west, SW

WordNet sense 2 (the southwestern region of the United States):

southwestern United States

WordNet sense 3 (coming from the southwest):

southwesterly

WordNet sense 4 (situated in or oriented toward the southwest):

southwestern

WordNet sense 5 (situated in or facing or moving toward or coming from the south):

south

WordNet sense 6 (to, toward, or in the southwest):

south-west, sou'west