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English definition of “drain”

drain

noun [C, usually singular]     /dreɪn/
something that uses too much of your energy , money , or time : Having a big mortgage is a real drain on your earnings . Unexpected repairs to the building have been a huge drain on our financial resources . The company's pension liability has become a cash drain.
down the drain informal completely wasted or spoiled : When the project was scrapped , all our efforts went down the drain. People feel that renting property is money down the drain.
→ See also brain drain
(Definition of drain noun from the Cambridge Business English Dictionary © Cambridge University Press)
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