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n. - A covered cistern; A well or other hole in which water has collected; An oil reservoir in an internal combustion engine.

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Usage examples (34)
  • The car and all its parts are original - even the oil in the sump is the very same as from 20 years ago.
  • Also, the sump was an above hole pump so it meant cutting the cap to fit the pipes in and sealing it with a couple of tubes of silicone.
  • There was some kind of sump here, or else the base of the tunnel had collapsed into a cavern.
  • Any openings in the basement floor must also be sealed, such as sump baskets and bathtub drains.
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The Open Dictionary of English is a collaborative project, based on Open Source materials, LearnThat resources, and partner APIs.
We give special thanks to our LearnThat volunteers, as well as Princeton University and Wiktionary for their Open Source word data. We're also grateful for the support given by Google, Wordnik.com, Dictionary.com, Stands4.com and YouTube, OEDILF.com, Kylescholz.com, Best-Practice.com, Forvo.com, as well as the generous Creative Commons community.