166ccb49_ranite_Curling_Club_of_Seattle__What_It_Means
[Term] SWEEPING [What It Means] 
Players sweep to make the rock travel farther or to keep it from curling more than desired. Good sweepers can increase the distance a stone travels by as much as 15 feet. Sweeping creates a thin film of water under the rock, allowing it to glide easier. Usually two players are ready to sweep each shot.
Glossary | Granite Curling Club of Seattle
What It Means