- organ - a fully differentiated structural and functional unit in an animal that is specialized for some particular function
 --1 is a kind of body part
 --1 has part: lobe
 --1 has particulars:
- organ - a government agency or instrument devoted to the performance of some specific function; "The Census Bureau is an organ of the Commerce Department"
 --2 is a kind of agency, federal agency, government agency, bureau, office, authority
 
- electric organ, electronic organ, Hammond organ, organ - (music) an electronic simulation of a pipe organ
 --3 is a kind of electronic instrument
 
- organ - a periodical that is published by a special interest group; "the organ of the communist party"
 --4 is a kind of periodical
 --4 has particulars: house organ
- organ, pipe organ - 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
 --5 is a kind of wind instrument, wind
 --5 has parts:keyboard; organ pipe, pipe, pipework; pedal, treadle, foot pedal, foot lever; piano keyboard, fingerboard, clavier; stop 
- harmonium, organ, reed organ - a free-reed instrument in which air is forced through the reeds by bellows
 --6 is a kind of free-reed instrument
 
- organ - a government agency or instrument devoted to the performance of some specific function; "The Census Bureau is an organ of the Commerce Department"