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English definition of “main”

main

adjective [always before noun]     /meɪn/
B1 most important or largest: the main problem/reason The main airport is 15 miles from the capital.Being important and having importance
the main thing B2 the most important fact in a situation: You're happy and that's the main thing.Important and essential thingsInformation and messages
(Definition of main adjective from the Cambridge Learner's Dictionary © Cambridge University Press)

Definitions of “main” in other dictionaries

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