- to withdraw or draw off (a liquid) gradually; remove slowly or by degrees, as by filtration: to drain oil from a crankcase.
- to withdraw liquid gradually from; make empty or dry by drawing off liquid: to drain a crankcase.
- to exhaust the resources of: to drain the treasury.
- to deprive of strength; tire.
- to flow off gradually.
- to become empty or dry by the gradual flowing off of liquid or moisture: This land drains into the Mississippi.
- something, as a pipe or conduit, by which a liquid drains.
- a material or appliance for maintaining the opening of a wound to permit free exit of fluids.
- gradual or continuous outflow, withdrawal, or expenditure.
- something that causes a large or continuous outflow, expenditure, or depletion: Medical expenses were a major drain on his bank account.
- an act of draining.
- Physical Geography.
- an artificial watercourse, as a ditch or trench.
- a natural watercourse modified to increase its flow of water.
- go down the drain,
- to become worthless or profitless.
- to go out of existence; disappear.
- a pipe or channel that carries off water, sewage, etc
- an instance or cause of continuous diminution in resources or energy; depletion
- a device, such as a tube, for insertion into a wound, incision, or bodily cavity to drain off pus, etc
- the electrode region in a field-effect transistor into which majority carriers flow from the interelectrode conductivity channel
- wasted
- to draw off or remove (liquid) from
- to flow (away) or filter (off)
- to dry or be emptied as a result of liquid running off or flowing away
- to drink the entire contents of (a glass, cup, etc)
- to consume or make constant demands on (resources, energy, etc); exhaust; sap
- to disappear or leave, esp gradually
- (of a river, etc) to carry off the surface water from (an area)
- (of an area) to discharge its surface water into rivers, streams, etc
