From a couple: The beau walks in a small circle to the left (1/4, 1/2 or 3/4 around) as the belle circles to the right (1/4, 1/2 or 3/4) to end facing a new person (or reversing facing direction).
Lloyd Bungert 1971
This definition is from The Handbook of Modern Square Dancing by Jay King.
It is provided here for informational and educational purposes only.