From parallel waves or two-faced lines: A directional call that means "Ends Circulate, Centers Trade." Finishes in the same formation started with. Acey Deucey was actually a "forerunner" movement--it contributed to the development of both "Circulate" and "Trade."
Larry Dee 1963
This definition is from The Handbook of Modern Square Dancing by Jay King.
It is provided here for informational and educational purposes only.