sump
noun
[ sʌmp ]
• a pit or hollow in which liquid collects, especially one in the floor of a mine or cave.
• the base of an internal combustion engine, which serves as a reservoir of oil for the lubrication system.
Origin:
Middle English (in the sense ‘marsh’): from Middle Dutch or Low German sump, or (in the mining sense) from German Sumpf ; related to swamp.
