The Collaborative International Dictionary of English v.0.48:

Leak \Leak\, v. i. [imp. & p. p. Leaked (l[=e]kt); p. pr. &
   vb. n. Leaking.] [Akin to D. lekken, G. lecken, lechen,
   Icel. leka, Dan. l[ae]kke, Sw. l[aum]cka, AS. leccan to wet,
   moisten. See Leak, n.]
   1. To let water or other fluid in or out through a hole,
      crevice, etc.; as, the cask leaks; the roof leaks; the
      boat leaks.
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   2. 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.
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   To leak out, to be divulged gradually or clandestinely; to
      become public; as, the facts leaked out.
      [1913 Webster]