From parallel waves or from three and one lines with three facing in and one end facing out. The two ends facing out circulate one position (ahead in the outer track) while the other six as individuals roll half toward the vacated end position. 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 with.
This definition is from The Handbook of Modern Square Dancing by Jay King.
It is provided here for informational and educational purposes only.