Definition: The word "jack wagner" is a German term that refers to a musical instrument with a round body and a long neck. It is typically used in the context of folk music or acoustic genres, and it has been played for centuries by many musicians around the world. <0x0A><0x0A>The specific definition of the word "jack wagner" varies depending on the region and time period. In Germany, it is associated with a particular type of instrument that was popular from the mid-19th century until the early 20th century. In other countries, the term may refer to a different type of instrument or musical genre.