| midwest | (n) the north central region of the United States (sometimes called the heartland or the breadbasket of America), Syn. middle west, midwestern United States |
| northwest | (n) the northwestern region of the United States, Syn. northwestern United States |
| southwest | (n) the southwestern region of the United States generally including New Mexico, Arizona, Texas, Nevada, California, and sometimes Utah and Colorado, Syn. southwestern United States |
| west | (n) the region of the United States lying to the west of the Mississippi River, Syn. western United States |
