noun (n)

• someone who jeers or mocks or treats something with contempt or calls out in derision(noun.person)

  Synonym:
  flouter, jeerer, scoffer
  

  source: wordnet30
• long-tailed grey-and-white songbird of the southern United States able to mimic songs of other birds(noun.animal)

  Synonym:
  mimus polyglotktos, mockingbird
  

  source: wordnet30
• One who, or that which, mocks; a scorner; a scoffer; a derider.(noun)

  source: webster1913