verb (used with object)
- 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.
verb (used without object)
- to flow off gradually.
- to become empty or dry by the gradual flowing off of liquid or moisture: This land drains into the Mississippi.
noun
- something, as a pipe or conduit, by which a liquid drains.
- Surgery. 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.
Idioms
- go down the drain,
- to become worthless or profitless.
- to go out of existence; disappear.
noun
- a pipe or channel that carries off water, sewage, etc
- an instance or cause of continuous diminution in resources or energy; depletion
- surgery a device, such as a tube, for insertion into a wound, incision, or bodily cavity to drain off pus, etc
- electronics the electrode region in a field-effect transistor into which majority carriers flow from the interelectrode conductivity channel
- down the drain wasted
verb
- (tr often foll by off) to draw off or remove (liquid) fromto drain water from vegetables; to drain vegetables
- (intr often foll by away) to flow (away) or filter (off)
- (intr) to dry or be emptied as a result of liquid running off or flowing awayleave the dishes to drain
- (tr) to drink the entire contents of (a glass, cup, etc)
- (tr) to consume or make constant demands on (resources, energy, etc); exhaust; sap
- (intr) to disappear or leave, esp graduallythe colour drained from his face
- (tr) (of a river, etc) to carry off the surface water from (an area)
- (intr) (of an area) to discharge its surface water into rivers, streams, etc
v.Old English dreahnian “to drain, strain out,” from Proto-Germanic *dreug-, source of drought, dry, giving the English word originally a sense of “make dry.” Figurative meaning of “exhaust” is attested from 1650s. The word is not found in surviving texts between late Old English and the 1500s. Related: Drained; draining. n.1550s, from drain (v.). n.
- A device, such as a tube, inserted into the opening of a wound or into a body or dental cavity to facilitate discharge of fluid or purulent material.
v.
- To draw off a liquid gradually as it forms.
see brain drain; down the drain.