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.
Columbus, Wisconsin. Columbus is a city in Columbia (mostly) and Dodge Counties in the south-central part of the U.S. state of Wisconsin. The population was 4,991 at the 2010 census. All of this population resided in the Columbia County portion of the city. Columbus is located about 28 miles (45 km) northeast of Madison on the Crawfish River.