A shuvit rewind is also known as the feather flip, its where the skater attempts a pop shuvit and then kicks it back into place before it makes a full 180 turn. This trick requires a very high amount of air, not an easy trick to learn, one of the more advanced tricks.
Skater: Dude I just landed a shuvit rewind.
Skater2: No way man I havent been able to learn those because i dont jump high enough
Skater3: Sucks for you man