From parallel waves or two faced lines: Centers Crossrun and Circulate and do a U-turn back. Ends slide together, arm turn 3/4. New centers in the wave across the set Trade and arm turn the one they meet 3/4. Waves finish as two faced lines and vice versa.
Nonie Moglia 1975
This definition is from The Handbook of Modern Square Dancing by Jay King.
It is provided here for informational and educational purposes only.