leak

intransitive verb

to let a fluid substance out or in accidentally: the boats leaks
to enter, or escape accidentally from, an object or container: often with in or out
to become known little by little, by accident, carelessness, or treachery: the truth leaked out

transitive verb

to permit (water, air, light, radiation, etc.) to pass accidentally in or out; allow to leak
to allow (secret or confidential information) to become known

noun

an accidental hole or crack that lets something out or in
any means of escape for something that ought not to be let out, lost, etc.
the fact of leaking; leakage
a disclosure of secret or confidential information; specif., an ostensibly accidental disclosure by a government official to the news media, actually intended to produce an effect
in full news leak
1. a loss of electrical current through faulty insulation
2. the point or path where this occurs
Slang the act of urinating: usually in the phrase

See leak in American Heritage Dictionary 4