organ meaning and definition

ORGAN noun

Definition of organ (noun)

1. a fully differentiated structural and functional unit in an animal that is specialized for some particular function
2. a government agency or instrument devoted to the performance of some specific function
   • "The Census Bureau is an organ of the Commerce Department"
3. (music) an electronic simulation of a pipe organ
   • synonyms: electric organ, electronic organ, Hammond organ
4. a periodical that is published by a special interest group
   • "the organ of the communist party"
5. 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
   • synonyms: pipe organ
6. a free-reed instrument in which air is forced through the reeds by bellows
   • synonyms: harmonium, reed organ