drainpipe

Short definition from Wiktionary

Noun

1. 1
   A pipe that carries fluid which is being drained: A verticle pipe carrying water from the roof gutter down the side of a building; downspout.
2. 2
   A pipe that carries fluid which is being drained: A conduit for carrying rainwater or flood water.
3. 3
   A pipe that carries fluid which is being drained: A pipe that carries wastewater from a bathtub, shower, sink, etc.
4. 4
   A pipe that carries fluid which is being drained: A pipe that is part of a device or appliance for carrying away waste fluid.
5. 5
   The type of pipe that is used to construct a drainpipe.
6. 6
   A type of form-fitting trousers with highly tapered legs.