Wisconsin

noun

1. a state in the N central United States: a part of the Midwest. 56,154 sq. mi. (145,440 sq. km). Capital: Madison. Abbreviation: WI (for use with zip code), Wis., Wisc.
2. a river flowing SW from N Wisconsin to the Mississippi. 430 miles (690 km) long.
3. the fourth stage of the glaciation of North America during the Pleistocene.