What does CloS mean in World of Warcraft? CloS WoW Term Definition

The WoW term CloS is an abbreviation that stands for the Rogue ability Cloak of Shadows. CloS is a cooldown that renders the Rogue almost immune to magic effects for a short amount of time, as well as removing magic effects already active on the Rogue. The CloS WoW term is not terribly well-known.