What is the meaning of Sump?

A hollow or pit into which liquid drains, such as a cesspool, cesspit or sink.

The lowest part of a mineshaft into which water drains.

A completely flooded cave passage, sometimes passable by diving.

The crankcase or oil reservoir of an internal combustion engine.

The pit at the lowest point in a circulating or drainage system (FM 55-501).

An intentional depression around a drain or scupper that promotes drainage.

Of a cave passage, to end in a sump, or to fill completely with water on occasion.

swamp

a swamp (type of wetland)

a swamp (type of wetland)

a corf, a container for keeping live fish

marshy ground

Short for kaffesump (coffee grounds).

Source: wiktionary.org