sump

Liquid collection pit

A sump is a pit or reservoir that collects liquid, typically at the lowest point of a system.

In buildings, a sump collects water that seeps into basements; a sump pump removes it.

In engines, the sump (or oil pan) holds lubricating oil.

Mining operations use sumps to collect drainage.

The word suggests a place where unwanted liquids gather.

crankcase

oil

Slippery viscous fluid

crankcase · dipstick · gasket · sediment · sludge · baffle · capacity · contamination · debris · bottom-end

mining

shaft

Narrow vertical passage

pit · underground · gallery · adit · catchment · runoff · accumulation · seepage · tailings · settling

pump

basement

Subterranean building level

ejector · discharge · pit · submersible · pedestal · backup · battery · alarm · overflow · perimeter

wastewater

treatment

Care for an ailment

sediment · sludge · grit · septic · interceptor · drainage · collection · industrial · overflow · retention

caving

cave

Underground hollow in rock

  • cenoteLimestone sinkhole revealing groundwater
  • poolCollective fund or basin
  • karstEroded soluble rock terrain

limestone · spelunking · cavern · speleology · subterranean · siphon · flowstone · grotto · stalactite · stalagmite

wetland

bog

Acidic peat wetland

  • marshGrassy waterlogged lowland
  • sloughBoggy ground or cast-off skin
  • fenLow marshy ground

mire · quagmire · bayou · depression · catchment · seasonal · waterlogged · peat · stagnant · floodplain

Categories
Opposites
vertical position/flow direction

sumppeak

Utmost height attained

apex · high point · summit · overflow · cistern

fluid handling function

sumpsprinkler

Water-dispersing lawn fixture

distributor · diffuser · fountain · discharge pipe · outflow

containment type

sumppressure vessel

Container built for high-pressure contents

airtight container · closed system · storage tank · cistern

Phrases
Family

sumps

Familiarity
Top 500,000
Profile
Used worldwide · Timeless · Concrete · Rated G