From eight chain thru formation: Inside lady leads through the outside two and goes around the lady with the inside man following ("chasing") her back into the center. The ladies in the center now walk around each other right shoulders in the center. Now the men lead through the outside couple and girls chase their own around the outside man and return to the center to face the outside two in starting formation.
This definition is from The Handbook of Modern Square Dancing by Jay King.
It is provided here for informational and educational purposes only.