noun (n)

• the (prehensile) extremity of the superior limb(noun.body)

  Example:
  He extended his mitt.
  

  Synonym:
  hand, manus, paw
  

  source: wordnet30
• the handwear used by fielders in playing baseball(noun.artifact)

  Synonym:
  baseball glove, baseball mitt, glove
  

  source: wordnet30
• A mitten; also, a covering for the wrist and hand and not for the fingers.(noun)

  source: webster1913