Rainwater (noun)

1. Water that falls as precipitation from clouds.
2. Water collected from the surface of the ground after it has rained.

Origin:

The word "rainwater" is a compound word, "rain" and "water", together meaning water that falls as precipitation from clouds.

Examples:

1. They collected rainwater in barrels to use for watering the garden.
2. The rainwater was used to fill the swimming pool.
3. The rainwater was channeled into a drainage system to prevent flooding.
4. The water in the stream was mostly rainwater that had flowed down from the mountains.
5. We use the rainwater for irrigation, this way we save money on water bills.