Water that has fallen as rain and contains little dissolved mineral matter.(noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "rainwater" in a sentence
"First, go up yourself or send the gardener, and check the roof drains and gutters to assure that the rainwater is able to flow freely and quickly off the roof."
"DIOP (through translator): We constructed what we call rainwater basins, which allow us to stock rainwater and allow farmers who are poor to cultivate crops after the rain seasons."
"Water is withdrawn but is generally replaced or recharged when rainwater from the surface percolates downward."