sump
UK /sʌmp/ US /sʌmp/
noun 5verb 1
Definitions
noun
1
A hollow or pit into which liquid drains, such as a cesspool, cesspit or sink.
2
The lowest part of a mineshaft into which water drains.
3
A completely flooded cave passage, sometimes passable by diving.
4
The crankcase or oil reservoir of an internal combustion engine.
5
The pit at the lowest point in a circulating or drainage system (FM 55-501).
verb
1
Of a cave passage, to end in a sump, or to fill completely with water on occasion.
We discovered a new passage, but it sumped after 100 metres.
This low passage sumps quickly after moderate rainfall.
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