Mock·ing, a. Imitating, esp. in derision, or so as to cause derision; mimicking; derisive.
  Mocking thrush Zool., any species of the genus Harporhynchus, as the brown thrush (Harporhynchus rufus).
  Mocking wren Zool., any American wren of the genus Thryothorus, esp. Thryothorus Ludovicianus.
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  mocking thrush
       n : thrush-like American songbird able to mimic other birdsongs
           [syn: thrasher]