Drainage refers to the process of removing or carrying away water or other liquids from an area. It can involve the use of pipes, channels, or natural pathways to redirect the water and prevent it from pooling or causing damage. Full definition
Keeping your hands and feet elevated helps promote drainage of fluid back to your heart. (momtricks.com)
According to him, the river escaped its path into the federal road, due to lack of proper drainage system and bad roads. (dailypost.ng)
If you take any old broken up flower pot or even rocks and put them in the bottom of a crock, it should be enough for drainage for any plant. (theletteredcottage.net)