| the region of the United States bounded on the W by the Rocky Mountains, on the S by the Ohio River and the S extremities of Missouri and Kansas, and on the E, variously, by the Allegheny Mountains, the E border of Ohio, or the E border of Illinois. |
| Middle West See Midwest. Middle West'ern adj., Middle West'ern·er n. |
Area of the northern United States including the states of Illinois, Indiana, Iowa, Kansas, Michigan, Minnesota, Missouri, Nebraska, Ohio, and Wisconsin.
Note: Location of some of the richest farming land in the world; known for its corn, hogs, and dairy and beef cattle.