noun (n)

• a musical stringed instrument with strings stretched over a flat sounding board; it is laid flat and played with a plectrum and with fingers(noun.artifact)

  Synonym:
  zither, zithern
  

  source: wordnet30
• a 16th century musical instrument resembling a guitar with a pear-shaped soundbox and wire strings(noun.artifact)

  Synonym:
  cithern, citole, cittern, gittern
  

  source: wordnet30