Definition of: southwest

(south′west′, in nautical usage sou′west′) noun
That point on the mariner's compass midway between south and west; any region lying toward that point on the horizon.
—adjective Of, pertaining to, facing, or toward the southwest; blowing from the southwest.
—adverb Toward or from the southwest.
—south′west′ern, south′west′ern·most adjective
—south′west′ward adjective & adverb
—south′·west′ward·ly, south′west′wards adverb