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/drayn/, v.t.1. to withdraw or draw off (a liquid) gradually; remove slowly or by degrees, as by filtration: to drain oil from a crankcase.2. to withdraw liquid gradually from; make empty or dry by drawing off liquid: to drain a crankcase.3. to exhaust the resources of: to drain the treasury.4. to deprive of strength; tire.v.i.5. to flow off gradually.6. to become empty or dry by the gradual flowing off of liquid or moisture: This land drains into the Mississippi.n.7. something, as a pipe or conduit, by which a liquid drains.8. Surg. a material or appliance for maintaining the opening of a wound to permit free exit of fluids.9. gradual or continuous outflow, withdrawal, or expenditure.10. something that causes a large or continuous outflow, expenditure, or depletion: Medical expenses were a major drain on his bank account.11. an act of draining.12. Physical Geog.a. an artificial watercourse, as a ditch or trench.b. a natural watercourse modified to increase its flow of water.13. go down the drain,a. to become worthless or profitless.b. to go out of existence; disappear.[bef. 1000; ME dreynen, OE drehnian, dreahnian to strain, filter; akin to DRY]
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Universalium. 2010.