Empty a sink, or deplete of energy

verb

1. To draw off (liquid) gradually or completely

   "drained all the water out of the pool"

2. To cause the gradual disappearance of

   "drain the region's wealth"

3. To exhaust see exhaust physically or emotionally

   "feeling drained at the end of a long workday"

4. To make gradually dry

   "drain a swamp"

5. To carry away the surface water of

   "the river that drains the valley"

6. To deplete or empty by or as if by drawing off by degrees or in increments

   "drained the country of its resources"

7. To empty by drinking the contents of

   "drain a mug of beer"

8. Drop, sink

   "drain the putt"

9. Filter
10. To become emptied or freed of liquid by its flowing or dropping

    "waiting for the tub to drain"

11. To discharge surface or surplus water

    "drains into the Gulf of Mexico"

12. To flow off gradually
13. To disappear gradually dwindle

    "his nervousness drained away, as it always did"

noun

1. A means (such as a pipe) by which usually liquid matter is drained
2. Something that causes depletion burden

   "a drain on the city's resources"

3. The act of draining
4. A gradual outflow or withdrawal depletion

   "a net drain from the East of five million souls"

5. An electrode in a field-effect transistor toward which charge carriers move compare gate, source

phrasal verb

1. To cause (a liquid) to flow away from something or to leave the surface of something

   "When the beans have cooked long enough to be tender, drain off the water and set them aside."

2. To take (something important or valuable) from something

   "An independent candidate could drain off votes from either party."

noun

1. The departure of educated or professional people from one country, economic sector, or field for another usually for better pay or living conditions

idiom

1. To laugh very hard

   "She was laughing like a drain."

noun

1. A drain that carries water (such as rainwater) away from a street, parking lot, etc.