A hole or crack through which a liquid or gas can escape from a container or pipe. The plumber fixed the leak in the kitchen sink.
An unintended release of confidential information. The company suffered a major data leak last year.
The act or instance of liquid, gas, or information escaping from its intended containment. The leak was contained before the chemicals reached the river.
(slang) An act of urination. He ducked behind the bushes to take a quick leak.