95dc162e_Glossary_of_Dance_Terms__m_Dance_Dictionary_from_Webref
Mirror
A specific type of following in which one partner, usually the lady, dances the mirror image of her partner's steps. So, if he steps back and the lady steps forward, she can be said literally to be "following" him. If he dances back and she dances back, too, if they step apart, then she is "mirroring" him. A vine is a mirrored figure; a twist vine is not. Jive involves more mirroring (the rock recover) and West Coast Swing more following (the man draws the lady forward).
Glossary of Dance Terms
Description Glossary of Terms and Abbreviations from BallroomDancers.com Dance Dictionary from Webref