From a wave: All arm turn half, new centers arm turn 3/4 and then Cast Back (or Peel Off) and move up a quarter to an end position as the other two dancers U-turn back (toward the center) and Trade to become centers. Finishes in a wave. (Equivalent to Double Swing Thru).
Vic Harris 1974
This definition is from The Handbook of Modern Square Dancing by Jay King.
It is provided here for informational and educational purposes only.