The Collaborative International Dictionary of English v.0.48:

Water crake \Wa"ter crake`\ (Zool.)
   (a) The dipper.
   (b) The spotted crake (Porzana maruetta). See Illust. of
       Crake.
   (c) The swamp hen, or crake, of Australia.
       [1913 Webster]
       [1913 Webster]