leak - English dictionary definition

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Leak A crack, crevice, fissure, or hole which admits water or other fluid, or lets it escape; as, a leak in a roof; a leak in a boat; a leak in a gas pipe.
Leak The entrance or escape of a fluid through a crack, fissure, or other aperture; as, the leak gained on the ship's pumps.
Leak Leaky.
Leak To let water or other fluid in or out through a hole, crevice, etc.; as, the cask leaks; the roof leaks; the boat leaks.
Leak To enter or escape, as a fluid, through a hole, crevice, etc. ; to pass gradually into, or out of, something; -- usually with in or out.
leak leak With a qualifier, one of a class of resource-management bugs that occur when resources are not freed properly after operations on them are finished, so they effectively disappear leak out. This leads to eventual exhaustion as new allocation requests come in. One might refer to, say, a "window handle leak" in a window system. See memory leak, fd leak. [Jargon File]
leak unauthorized especially deliberate disclosure of confidential information
leak fungus fungus causing soft watery rot in fruits and vegetables and rings of dry rot around roots of sweet potatoes
leak out be leaked; "The news leaked out despite his secrecy"