• A pipe or drain for carrying off night soil.
A vertical pipe linking a water-closet or urinal into a sewer. It will extend above the eaves of the building, and have an open top, sometimes with a ventilating cap.
Soil pipe A pipe or drain for carrying off night soil. 
- A large pipe that carries liquid and solid wastes to a sewer or septic tank.
[n] - drain that conveys liquid waste from toilets, etc.
noun drain that conveys liquid waste from toilets, etc.
A large pipe that carries liquid and solid wastes to a sewer or septic tank.
A large pipe that carries liquid and solid wastes to a sewer or septic tank.