rainwash
/ˈreɪnˌwɑʃ/
noun
- The process by which rain carries away loose soil, sand, or other surface material, especially on slopes or hillsides.
- The road was blocked by debris brought down by rainwash from the mountain.
- After the storm, rainwash had carved deep channels into the hillside.
- Farmers worry about rainwash removing the topsoil from their fields.
- The material (such as soil, gravel, or sediment) that is moved and deposited by rainwater.
- The geologist studied the rainwash to understand how the valley formed.
- A layer of rainwash covered the sidewalk after the heavy downpour.
- Gardeners often find rainwash collecting at the bottom of sloped lawns.