{s} of or pertaining to the southwest; facing toward the southwest; coming from the southwest; of or pertaining to the southwestern region of the United States
SW in AM, also use S.W.SW is a written abbreviation for south-west. King's Road, London SW
Short wave A section of the electromagnetic frequency spectrum between 3 and 30 MHZ Used for long distance radio communications since the signals are reflected from the ionosphere Also known as the high frequency (HF) range