From parallel waves: All Lock It (into a temporary Tidal Wave) and, without stopping, the center four do another Lock It. The ends, meanwhile, Step Thru and move forward around the centers to meet their counterparts from the other side. All now do a Single Hinge. Finishes in column formation.
Paul McNutt 1976
This definition is from The Handbook of Modern Square Dancing by Jay King.
It is provided here for informational and educational purposes only.