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English definition of “the mains”

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the mains

noun [group]
 
/meɪnz/ UK
PIPES the system of pipes or wires that carries gas, water, or electricity to a building: The house isn't connected to the mains yet.Plumbing and pipes and sewage
ELECTRICITY the place inside a building where you can connect a machine to a supply of electricity: Is the cooker turned off at the mains?Electrical components and circuitry
(Definition of the mains from the Cambridge Learners Dictionary © Cambridge University Press)
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