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English definition of “drain”

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drain

verb [I/T]  /dreɪn/ us  
to allow or cause liquid to flow away from something: [I] Wash the lettuce in the sink and let it drain. [T] Drain the lettuce and then pat it dry with paper towels. If something drains you, it makes you very tired: [T] It drains you to work with a class of 20 four-year-olds, let me tell you.

drain

noun [C]  /dreɪn/ us  
a pipe or channel that carries away waste water or other liquids: She spilled some sugar in the sink and washed it down the drain. Something that is a drain on you takes away a lot of your energy and makes you tired: Taking care of his sick mother was quite a drain on him. If something is a drain on your money or something else, it uses a lot of it or makes it weaker: Having two mortgages was a tremendous drain on their resources.
(Definition of drain from the Cambridge Academic Content Dictionary © Cambridge University Press)
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