From parallel waves: The movement goes in two tracks of four that are side by side rather than one track inside the other. Each dancer moves ahead in his or her own box of four on own side of the wave to assume the position and facing direction of the dancer ahead. Finishes in parallel waves.
Ray Vierra 1964
This definition is from The Handbook of Modern Square Dancing by Jay King.
It is provided here for informational and educational purposes only.