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DictionarysewerWastewater channel
noun

sewer

SOO-er/ˈsuːər/

An underground channel carrying wastewater or rainwater runoff.

Wastewater flows through the underground sewer.

A simple ground cutaway reveals a large underground sewer pipe receiving wastewater from a smaller connected drain, with visible murky water flowing along the bottom.
Etymology
sewerOld North Frenchsluice from a pond

A sluice lets water drain from a pond. The word broadened to drainage channels and then came to mean an underground channel carrying wastewater.

In context

City of Columbia36:57
pipe that takes the waste water from their house out to the main line and the homeowner owns the portion up into the right-of-way lot or easement line of the sewer of the main sewer
City Council Meeting | September 15, 2020

More examples

  • Workers inspected the sewer beneath the street.
  • A blocked sewer caused flooding in the basement.
  • The town replaced its oldest sewers.

Forms

sewer · sewers

Similar words

drain
Any channel or pipe carrying unwanted water away.
culvert
A passage carrying water beneath a road or structure.