# sump

/ˈsəmp/ (US) · /sˈʌmp/ (UK) · CEFR C1 · Noun

Source: https://englishreference.com/word/sump
Updated: 2026-05-30

## Definition

a large hole or tank at the bottom of a ship or building that collects water or oil. It is usually the lowest point in the structure.

For teachers: a low-lying tank or pit designed to collect and hold fluids such as water, oil, or fuel. In nautical contexts, it refers to the lowest part of a ship's hull.

## Examples

- The ship's sump collects rainwater from the deck.
- The mechanic checked the engine sump for any signs of oil leaks or metal shavings.
- During the storm, the bilge pump failed, forcing the crew to manually bail water from the sump to prevent the vessel from taking on too much weight.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.