Source : Webster's Revised Unabridged Dictionary (1913)

Brown thrush \Brown" thrush"\ (Zo["o]l.)
   A common American singing bird ({Harporhynchus rufus}),
   allied to the mocking bird; -- also called brown thrasher.

Source : WordNet®

brown thrush
     n : common large songbird of eastern United States having
         reddish-brown plumage [syn: {brown thrasher}, {Toxostoma
         rufums}]