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English definition of “leak”

leak

noun [C]
 
 
/liːk/
an opening through which liquid or gas can escape from a pipe or container, or the liquid or gas that escapes: fuel/gas/oil leaks
the act of allowing secret information to become publicly known: The leak of the top-secret discussions will be a huge embarrassment to the company.
(Definition of leak noun from the Cambridge Business English Dictionary © Cambridge University Press)
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