sump

Definitions

Aviation

Cars & Driving

  • noun a metal bowl (usually of sheet steel or cast alloy) attached to the bottom of the crankcase, into which oil drains to form a reservoir; typically carries one gallon of motor oil

Construction

  • A pit, tank, or basin that receives sewage, liquid waste, seepage, or overflow water and is located below the normal grade of the disposal system. A sump must be emptied by mechanical means.
  • A depression in a roof deck at a drain.
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