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English definition of “drain”

drain

noun [C]    /dreɪn/
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 noun from the Cambridge Academic Content Dictionary © Cambridge University Press)
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