main Definition in the Cambridge English Dictionary

Definition of “main” - English Dictionary

"main" in American English

See all translations

mainadjective [not gradable]

 us   /meɪn/

main adjective [not gradable] (MOST IMPORTANT)

most ​important or ​larger: The main thing is to ​keepcalm and don’t get ​angry. The main ​socialevent of the ​summer was a ​dance and ​reception.

mainnoun [C]

 us   /meɪn/

main noun [C] (PIPE)

a ​largepipe that is ​part of the ​systemcarryingwater or ​gas from one ​place to another: A ​water main ​burst and ​flooded the ​street.
(Definition of main from the Cambridge Academic Content Dictionary © Cambridge University Press)

"main" in British English

See all translations

mainadjective [before noun]

uk   us   /meɪn/
B1 larger, more ​important, or having more ​influence than ​others of the same ​type: The main thing is not to ​worry. One of the main reasons I came to ​England was to ​study the ​language. You'll ​find the main points of my ​proposal in the ​report. Our main aim/​objective is to ​improve the company's ​productivity. The main problem is a ​lack of ​resources. My main concern about ​moving to San Fransisco is the ​cost of ​housing.
More examples


uk   us   /meɪn/

main noun (PIPE)

[C] a ​largepipe that ​carrieswater or ​gas, or a ​wirecarryingelectricity, from one ​place to another, to which a ​house can be ​connected: a gas main The ​severecoldcaused a water main to ​burst and ​flood the ​street.mains [plural] UK the ​system of ​pipes or ​wires that ​carrywater or ​electricity into a ​house, or the ​pipes that ​carrysewage away from a ​house: The ​house isn't on the mains. They ​bought a ​house with no mains supply. mains electricitythe mains UK the ​place at which ​outsidepipes or ​wirescarryingwater, ​electricity, etc. ​connect with the ​system inside a ​house or ​building: Switch off the ​electricity at the mains before ​startingwork.

main noun (MOSTLY)

in the main generally or ​mostly: Her ​friends are ​teachers in the main.
(Definition of main from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)

"main" in Business English

See all translations


uk   us   /meɪn/
biggest or most important: The ​reportidentified three main ​areas for ​improvement. Please go to the ​receptiondesk at the main ​entrance. British Airways, the company's main ​rival, had also seen an ​improvement . the main problem/reason/​objective
(Definition of main from the Cambridge Business English Dictionary © Cambridge University Press)
Translations of “main”
in Korean 주요한…
in Arabic رَئيسي…
in Malaysian utama…
in French principal…
in Russian основной, главный…
in Chinese (Traditional) 主要的, 最重要的, 最大的…
in Italian principale, più importante…
in Turkish asıl, esas, temel…
in Polish główny…
in Spanish principal…
in Vietnamese chính, quan trọng nhất…
in Portuguese principal…
in Thai สำคัญที่สุด…
in German Haupt-……
in Catalan principal…
in Japanese 主な…
in Chinese (Simplified) 主要的, 最重要的, 最大的…
in Indonesian utama…
What is the pronunciation of main?
Add Cambridge dictionaries to your browser to your website
Word of the Day

be nothing to it

used to say something is very easy

Word of the Day

There is no such thing as a true synonym in English. Discuss!
There is no such thing as a true synonym in English. Discuss!
by Kate Woodford,
November 25, 2015
In the Cambridge Advanced Learner’s Dictionary the word ‘synonym’ is defined as ‘a word or phrase that has the same or nearly the same meaning as another word or phrase in the same language’. As you might expect, definitions for this word are broadly similar in other dictionaries and yet the italicized

Read More 

climatarian adjective
climatarian adjective
November 23, 2015
choosing to eat a diet that has minimal impact on the climate, i.e. one that excludes food transported a long way or meat whose production gives rise to CO2 emissions Climate change is not normally on people’s minds when they choose what to have for lunch, but a new diet is calling for

Read More