Definition: Jackson5: A fictional band formed by George Jackson, a young man who had been kicked out from the local high school. The band is known for their unique sound that blends funk and soul with elements of hip-hop. Each member has a different background, such as being from the South or in the military. Definition: It's a term used to describe a group of musicians who are commonly associated with each other due to shared experiences and connections. Jackson5 is an example of this type of collaboration.