- Disposal of liquid waste
- Sewage
- System of water courses
- System of watercourses
- A draining; a gradual flowing off of any liquid; also,
that which flows out of a drain.
- The mode in which the waters of a country pass off by its
streams and rivers.
- The system of drains and their operation, by which
superfluous water is removed from towns, railway beds, mines, and other
works.
- Covered cistern
- Sewage hole
- Sewage pit
- A cistern in the course, or the termination, of a drain,
to collect sedimentary or superfluous matter; a privy vault; any
receptacle of filth.
- Partly forces spitfire to refuse pool
- Sewage cistern
- Sump