Meaning of “leak” - Learner’s Dictionary

leak

verb uk us /liːk/
LIQUID/GAS [ I, T ]

B2 If a liquid or gas leaks, it comes out of a hole by accident, and if a container leaks, it allows liquid or gas to come out when it should not:

Water had leaked all over the floor.
The bottle must have leaked because the bag's all wet.
SECRETS [ T ]

If someone leaks secret information, they intentionally tell people about it:

Details of the report had been leaked to the press.

(Definition of “leak verb” from the Cambridge Learner’s Dictionary © Cambridge University Press)