Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “the mains”

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 noun from the Cambridge Learner's Dictionary © Cambridge University Press)

Translations of “the mains”

Word of the Day

generous

willing to give money, help, kindness, etc., especially more than is usual or expected

Word of the Day

Blog

Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More