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Definition of main noun from the Oxford Advanced Learner's Dictionary

main

noun
 
/meɪn/
 
/meɪn/
Idioms
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  1. [countable] a large pipe that carries water or gas to a building; a large cable that carries electricity to a building
    • a leaking gas main
    • The main serves four towns.
    see also ring main, rising main, water mainTopics Houses and homesc2
    Oxford Collocations Dictionaryadjective
    • gas
    • water
    • broken
    verb + main
    • lay
    • replace
    • repair
    main + verb
    • serve something
    See full entry
  2. a large pipe that carries waste water and sewage (= human waste, etc.) away from a buildingTopics Houses and homesc2
    Oxford Collocations Dictionarymains + noun
    • electricity
    • gas
    • water
    preposition
    • at the mains
    • on the mains
    phrases
    • connected to the mains
    See full entry
  3. the mains
    [uncountable, plural] (British English) the place where the supply of water, gas or electricity to a building or an area starts; the system of providing gas, water and electricity to a building or of carrying it away from a building
    • The house is not yet connected to the mains.
    • at the mains The electricity supply has been cut off at the mains.
    • Plug the transformer into the mains (= the place on a wall where electricity is brought into a room).
    • mains gas/water/electricity
    • The shaver will run off batteries or mains.
    • mains drainage
    Extra Examples
    • Some of the remoter houses in the town are not on the mains.
    • Turn the water off at the mains.
    • an island without mains electricity
    Oxford Collocations Dictionarymains + noun
    • electricity
    • gas
    • water
    preposition
    • at the mains
    • on the mains
    phrases
    • connected to the mains
    See full entry
  4. Word OriginMiddle English: from Old English mægen ‘physical force’, reinforced by Old Norse meginn, megn ‘strong, powerful’, both from a Germanic base meaning ‘have power’.
Idioms
in the main
  1. used to say that a statement is true in most cases
    • The service here is, in the main, reliable.
    • In the main, the money raised goes to children’s charities.
See main in the Oxford Advanced American DictionarySee main in the Oxford Learner's Dictionary of Academic English
previously
adverb
 
 
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