WINTER SPORTS REVIEW
'(<a href="http://www.j-archive.com/media/2005-03-14_J_25.jpg" target="_blank">Jimmy of the Clue Crew narrates a game being played on a rink in Park City, UT.</a>)   As well as speeding up the stone by reducing friction, sweeping reduces side-to-side movement, which logically is called this'
the curl (curling accepted)