Definitions

1. noun

water that falls to the ground as precipitation

“The garden will get a good supply of rainwater during the summer months.”

2. noun

water collected from rain, often stored and reused for irrigation, household use, etc.

“The community uses rainwater harvesting systems to reduce their water bills.”

3. noun

the liquid portion of rain, as distinguished from the solid portion (snow, sleet, etc.).

“The meteorologist explained the difference between rainwater and snowfall in the forecast.”