Source : Webster's Revised Unabridged Dictionary (1913)

Water thrush \Wa"ter thrush`\ (Zo["o]l.)
   (a) A North American bird of the genus {Seiurus}, belonging
       to the Warbler family, especially the common species ({S.
       Noveboracensis}).
   (b) The European water ousel.
   (b) The pied wagtail.