The term RAIN HOLDER can be summarized as a CLOUD, which is a 5 letter word. A CLOUD is a visible mass of condensed water droplets or frozen crystals suspended in the atmosphere above the surface of the Earth. Clouds form when air containing water vapor rises and cools to the point where the water vapor condenses into liquid droplets or ice crystals. Clouds are important for the Earth's climate because they reflect sunlight and trap heat. They also play an important role in the water cycle by releasing precipitation.