95dc162e_Glossary_of_Dance_Terms__m_Dance_Dictionary_from_Webref
Slingshot
In an L-position with the man maybe facing wall and the woman facing LOD, the man lunges to the side L and extends his arms to lead the woman to rock back R (this is pulling back the slingshot). Then both recover to their trail feet (releasing the slingshot). This move gives a little more propulsion or drama to the next figure—maybe a throwaway in jive or a throwout in west-coast—than a tamer entry, such as a walk two or rock recover.
Glossary of Dance Terms
Description Glossary of Terms and Abbreviations from BallroomDancers.com Dance Dictionary from Webref