Wiktionary
shove-it
n. (context skateboarding English) A trick where the board is rotated 180 degrees under the rider's feet.
Wikipedia
Shove-it
A Shove-it (or shuvit) is a skateboarding trick where the skateboarder makes the board spin 180 degrees without the tail of the board hitting the ground, or more, under his/her feet. There are many variations of the shove-it but they all follow the same principle: The skateboarder's lead foot remains in one spot, while the back foot performs the "shove". The pop shove-it was originally called a "Ty hop", named after Ty Page.