organ

Noun

• a free-reed instrument in which air is forced through the reeds by bellows

• wind instrument whose sound is produced by means of pipes arranged in sets supplied with air from a bellows and controlled from a large complex musical keyboard

• a periodical that is published by a special interest group
  • the organ of the communist party
    

• (music) an electronic simulation of a pipe organ

• a government agency or instrument devoted to the performance of some specific function
  • The Census Bureau is an organ of the Commerce Department
    

• a fully differentiated structural and functional unit in an animal that is specialized for some particular function

Related words

• Synonyms: 
  harmonium , reed organ , pipe organ , electric organ , electronic organ , Hammond organ