melodeon

 
Pronunciation: /mɪˈləʊdɪən/
(also melodion)

noun

  • 1a small accordion of German origin, played especially by folk musicians.
    [ mid 19th century: probably from melody, on the pattern of accordion]
  • 2a small organ popular in the 19th century, similar to the harmonium.
    [alteration of earlier melodium]