noun (n)

• a gem (usually a diamond) in a setting by itself(noun.artifact)

  source: wordnet30
• extinct flightless bird related to the dodo(noun.animal)

  Synonym:
  pezophaps solitaria
  

  source: wordnet30
• a dull grey North American thrush noted for its beautiful song(noun.animal)

  source: wordnet30
• a card game played by one person(noun.act)

  Synonym:
  patience
  

  source: wordnet30
• A person who lives in solitude; a recluse; a hermit.(noun)

  source: webster1913