From parallel waves or from Three and One Lines with three facing out and one end facing in: The two ends facing in circulate once. The other six dancers as individuals roll half toward the end position just vacated. Each of these six assumes the position of the adjacent dancer, but faces in the opposite direction. Finishes in the same formation as the one started in.
This definition is from The Handbook of Modern Square Dancing by Jay King.
It is provided here for informational and educational purposes only.