Topic: CIVIL
| Date: | 1600-1700 |
| Origin: | sump 'swamp' (15-20 centuries), from Middle Dutch somp or Middle Low German sump 'wet ground' |
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sump
[countable]
[countable]1TECDH the lowest part of a drainage system, where liquids or wastes remain
2 British EnglishTTCTEM the part of an engine that contains the supply of oil [= oil pan American English]
