downspout

US /ˈdaʊn.spaʊt/
UK /ˈdaʊn.spaʊt/
"downspout" picture
1.

a pipe to carry rainwater from a roof gutter to a drain or to the ground

:
The old downspout was clogged with leaves and debris.
We need to repair the leaky downspout before the next rain.