spokenused to say what is the most important thing in a situation:
As long as you're not hurt, that's the main thing.
The main thing is not to panic.
➔ an eye for/on/to the main chance
at eye1 (22)WORD FOCUS: important WORD FOCUS: important similar words:main, key, chief, principal, leading, vital, crucial, essential, significant not important:unimportant, trivial, minor, irrelevant, insignificant ➔ See alsoimportant
Definition from the Longman Dictionary of Contemporary English Advanced Learner's Dictionary.