Pronunciation: (south"west'; Naut.sou"west'),[key] —n. 1. the point or direction midway between south and west. Abbr.: SW
2. a region in this direction.
3. the Southwest,the southwest region of the United States.
—adj. 1. lying toward, situated in, or directed toward the southwest.
2. coming from the southwest, as a wind.
—adv. in the direction midway between south and west.