Source : Webster's Revised Unabridged Dictionary (1913)

Jakes \Jakes\, n. [Prob. fr. F. Jacques, the proper name. See 2d
   {Jack}.]
   A privy. --Shak.

Source : WordNet®

jakes
     n : a small outbuilding with a bench having holes through which
         a user can defecate [syn: {outhouse}, {privy}, {earth-closet}]