from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A low-lying place, such as a pit, that receives drainage.
- n. A cesspool.
- n. A hole at the lowest point of a mine shaft into which water is drained in order to be pumped out.
- n. The crankcase or oil reservoir of an internal-combustion engine.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A hollow or pit into which liquid drains, such as a cesspool, cesspit or sink.
- n. The lowest part of a mine shaft into which water drains.
- n. A completely flooded cave passage, sometimes passable by diving.
- n. The crankcase or oil reservoir of an internal combustion engine.
- n. The pit at the lowest point in a circulating or drainage system (FM 55-501).
- n. An intentional depression around a drain or scupper that promotes drainage.
- v. Of a cave passage, to end in a sump, or to fill completely with water on occasion.
from the GNU version of the Collaborative International Dictionary of English
- n. A round pit of stone, lined with clay, for receiving the metal on its first fusion.
- n. The cistern or reservoir made at the lowest point of a mine, from which is pumped the water which accumulates there.
- n. A pond of water for salt works.
- n. A puddle or dirty pool.
from The Century Dictionary and Cyclopedia
- n. A puddle or pool of dirty water.
- n. A pond of water reserved for salt-works.
- n. In mining: The bottom of a shaft in which water is allowed to collect, in order that it may be pumped or otherwise raised to the surface or to the level of the adit. Also called in England, in some mining districts, a lodge.
- n. A shaft connecting one level with another, but not reaching the surface; a winze.
- n. A round pit of stone, lined with clay, for receiving metal on its first fusion.
- n. In an electrolytic tank, a compartment separated from the rest by a low dividing-wall.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a well or other hole in which water has collected
- n. a covered cistern; waste water and sewage flow into it
- n. an oil reservoir in an internal combustion engine
Middle English sompe, marsh, from Middle Low German sump or from Middle Dutch somp. Sense 2, from German Sumpf, swamp, sump, from Middle High German, swamp.(American Heritage® Dictionary of the English Language, Fourth Edition)