,| 1. | a pit, well, or the like in which water or other liquid is collected. |
| 2. | Machinery. a chamber at the bottom of a machine, pump, circulation system, etc., into which a fluid drains before recirculation or in which wastes gather before disposal. |
| 3. | Mining.
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| 4. | British. crankcase. |
| 5. | British Dialect. a swamp, bog, or muddy pool. |