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English definition of “leak”

leak

verb [I or T] uk   /liːk/ us  

leak verb [I or T] (LIQUID/GAS)

B2 (of a liquid or gas) to escape from a hole or crack in a pipe or container or (of a container) to allow liquid or gas to escape: Water was leaking from the pipe. Oil leaked out of the car. The tin was leaking. The car leaked oil all over the drive.

leak verb [I or T] (INFORMATION)

C2 to allow secret information to become generally known: He leaked the names to the press. News of the pay cuts had somehow leaked out.

leak

noun [C] uk   /liːk/ us  

leak noun [C] (LIQUID/GAS)

B2 a hole or crack through which a liquid or gas can flow out of a container, or the liquid or gas that comes out: There's water on the floor - we must have a leak. If you suspect a gas leak, phone the emergency number.

leak noun [C] (INFORMATION)

C2 the origin of secret information which becomes known, or the act of making it known: There have been several security leaks recently. They traced the leak to a secretary in the finance department.
(Definition of leak from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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