Cîroc Snap Frost Vodka is a French grape-based vodka that has become a staple of pop culture since its launch in 2003. It is one of a relatively small number of "eau-de-vie vodkas," meaning that it is distilled from fruit rather than grain, like a brandy. This style is becoming more popular, as craft distillers explore novel vodka production techniques, but Cîroc is certainly the most famous example on the global market.
Cîroc is best known in the United States thanks to the promotional prowess of Sean "Diddy" Combs, who took over US marketing for the brand in 2007. According to Wikipedia, the name Cîroc "is a portmanteau of the French word cime, meaning peak or summit-top, and the French word roche, meaning rock. A reference to the high-altitude vineyards of the Gaillac region where the Mauzac grapes are grown."