Word.ws English Dictionary

sump oil

sump oil noun: lubricating oil contained in the sump of an engine; the waste oil drained from the sump at the time of an oil change.

Noun

sump oil (uncountable)

  1. Lubricating oil contained in the sump of an engine; the waste oil drained from the sump at the time of an oil change.
    • Dirty sump oil is pumped out along a waste oil pipe line to storage tanks by the boiler house, to be used as boiler fuel.1960 December, “New G.E. Line diesel loco maintenance depot at Stratford”, in Trains Illustrated, page 767

Questions about sump oil

What does sump oil mean?
Sump oil means lubricating oil contained in the sump of an engine; the waste oil drained from the sump at the time of an oil change.
What part of speech is sump oil?
Sump oil is a noun.

Words near sump oil in the dictionary

  1. sumoylation
  2. sumoylations
  3. sump
  4. sump buster
  5. sump busters
  6. sump oil
  7. sump pit
  8. sump pits
  9. sump pump
  10. sump pumps
  11. sump tank

Source and license

Adapted from Wiktionary: sump oil (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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