southwest

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun The direction or point on the mariner's compass halfway between due south and due west, or 135° west of due north.
• noun An area or region lying in the southwest.
• noun A region of the southwest United States generally including New Mexico, Arizona, Texas, California, and Nevada and sometimes Utah and Colorado.
• adjective To, toward, of, facing, or in the southwest.
• adjective Originating in or coming from the southwest.
• adverb In, from, or toward the southwest.

from The Century Dictionary.

• To or from the southwest: as, the ship proceeded southwest; the wind blew southwest.
• noun That point on the horizon between south and west which is equally distant from them.
• noun A wind blowing from the southwest.
• noun With the definite article, the southwestern regions of the United States: in this phrase are often included the States of Louisiana, Arkansas, Missouri, and Texas, the Territories of Arizona, New Mexico, and Oklahoma, and the Indian Territory.
• Pertaining to the point midway between south and west, or lying in that direction.
• Proceeding from the southwest: as, a southwest wind.

from the GNU version of the Collaborative International Dictionary of English.

• adjective Pertaining to, or in the direction of, the southwest; proceeding toward the southwest; coming from the southwest.
• noun The point of the compass equally from the south and the west; the southwest part or region.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun The compass point halfway between south and west, specifically 225°, abbreviated as SW.
• adjective Towards the southwest, southwestwards, southwestern.
• adjective From the southwest, southwesterly

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• adverb to, toward, or in the southwest
• noun a location in the southwestern part of a country, region, or city
• adjective situated in or oriented toward the southwest
• adjective coming from the southwest
• noun the direction corresponding to the southwestward compass point
• noun the southwestern region of the United States generally including New Mexico, Arizona, Texas, Nevada, California, and sometimes Utah and Colorado
• noun the compass point midway between south and west; at 225 degrees
• adverb to, toward, or in the southwest