leak 
(lēk)
(lēk)v. leaked, leak·ing, leaks
v.intr.
1. To permit the escape, entry, or passage of something through a breach or flaw: rusted pipes that were beginning to leak; a boat leaking at the seams.
2. To escape or pass through a breach or flaw: helium leaking slowly from the balloon.
3. To become publicly known through a breach of secrecy: The news has leaked.
v.tr.
1. To permit (a substance) to escape or pass through a breach or flaw: a damaged reactor leaking radioactivity into the atmosphere.
2. To disclose without authorization or official sanction: leaked classified information to a reporter.
n.
Idiom: 1. A crack or flaw that permits something to escape from or enter a container or conduit: fixed the leak in the roof.
2.
a. The act or instance of leaking.
b. An amount leaked: equipment used in cleaning up oil leaks.
3. An unauthorized or a deliberate disclosure of confidential information: "Sometimes we can't respond to stories based on leaks" (Ronald Reagan).
4.
a. Loss of electric current as a result of faulty insulation.
b. The path or place at which this loss takes place.
take a leak Vulgar Slang
To urinate.
[Middle English leken, probably from Middle Dutch lēken.]
leaker n.