n.
    - a part of an organism which is typically self-contained and has a specific vital function. 
▸euphemistic a man's penis.
 - a large musical instrument having rows of pipes supplied with air from bellows and arranged in ranks, each controlled by a stop, and played using a keyboard or by an automatic mechanism. 
▸a smaller instrument without pipes, producing similar sounds electronically.
 - a department or organization that performs a specified function.
 - a newspaper or periodical which puts forward the views of a political party or movement.
 
 
  Derivative
  
  Etymology
  OE, via L. from Gk organon ‘tool, sense organ’, reinforced in ME by OFr. organe.