said of a liquid, gas, etc: to enter or escape through a crack or hole, usu accidentally
said of a container: to let something enter or escape in this way
(often + out) said of information: to become known despite efforts at concealment
to permit (a liquid, gas, etc) to enter or escape through or as if through a crack or hole
to give out (information) surreptitiously
He leaked the story to the press