downpipe
/ˈdaʊnpaɪp/
noun
- A pipe that carries rainwater from a roof gutter down to the ground or to a drain.
- The downpipe was clogged with leaves, causing water to overflow.
- He attached a new downpipe to the gutter to direct rain away from the foundation.
- During the storm, the downpipe carried a steady stream of water to the drain.