95dc162e_Glossary_of_Dance_Terms__m_Dance_Dictionary_from_Webref
Sway
Lean or tilt the body from the ankle upward in a direction to the side. The hips lead the movement, and then the upper body follows. Stretch the opposite side of the body. Commonly used during turns when one sways toward the center of the arc to counteract a falling away from the turn. Also used to create "pictures" -- during a right lunge we sway right; during a promenade sway we sway left. Broken Sway is sway from the hips up, rather than from the ankles up. Rather than a smooth arc to the body, there is a break or kink at the waist.
Glossary of Dance Terms
Description Glossary of Terms and Abbreviations from BallroomDancers.com Dance Dictionary from Webref