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Sump (Noun)

A well or other hole in which water has collected.

Nouns denoting man-made objects.

The old sump in the backyard collected rainwater and created a haven for frogs and insects.
After a significant rainfall, the sump in the park was filled to capacity, covering the nearby walking trail.
The smell of the sump in the dirt alleyway was overpowering due to years of stagnant water.
Heavy flooding had turned the small sump near the storm drain into a small, murky lake.
In the summer, the sump in the abandoned lot became a popular spot for local kids to cool off and play.

A covered cistern; waste water and sewage flow into it.

Nouns denoting man-made objects.

The plumber crawled into the cramped space beneath the house to inspect the sump and pump.
Waste water from the sinks and showers flowed into the sump, which was located in the basement.
After a heavy rain, the sump was filled to capacity and the pump was working overtime to drain it.
The sump was equipped with a float switch that turned on the pump when the water level got too high.
In areas with poor drainage, a sump is often installed to collect and dispose of stormwater and wastewater.