Outfall (noun)

1. The place where a river, stream, or drain discharges into a larger body of water.
2. A pipe or channel that carries waste water from a sewer or drain into a river, lake, or sea.

Origin:

From the old english 'utfallan' meaning 'to fall out', which is derived from 'ut' meaning 'out' and 'fallan' meaning 'to fall'. the term was first used in the early 17th century in reference to the discharge of a river or stream.

Examples:

1. The outfall of the river is at the mouth where it flows into the ocean.
2. The outfall of the wastewater treatment plant was a concern for the nearby residents.
3. The outfall was designed to prevent the discharge of pollutants into the lake.
4. The outfall was surveyed to ensure the proper functioning of the drainage system.
5. The outfall pipe was extended to the deeper waters to prevent contamination of the shoreline.