Also called knave. a playing card bearing the picture of a soldier or servant. 3. a connecting device in an electrical circuit designed for the insertion of a plug: a telephone jack. 4. (cap.) Informal. fellow; buddy; man (usu. used in addressing a stranger). 5. a. one of a set of small, six-pointed metal objects or pebbles used in the game of jacks. b. jacks, (used with a sing.
Jackson County is a county located in the U.S. state of Wisconsin. As of the 2010 census, the population was 20,449. Its county seat is Black River Falls. Jackson County was formed from Crawford County in 1853. It was named for President Andrew Jackson.
For the adjacent town, see Cedarburg (town), Wisconsin. Cedarburg is a city in Ozaukee County, Wisconsin, United States. It is located about 20 miles (32 km) north of Milwaukee and near the shores of Lake Michigan. The city is bordered by the village of Grafton to the east and the Town of Cedarburg elsewhere. The population was 11,412 at the 2010 census.