a periodical that is published by a special interest group(noun.communication)
Example: The organ of the communist party.
source: wordnet30
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(noun.artifact)
An instrument or medium by which some important action is performed, or an important end accomplished; as, legislatures, courts, armies, taxgatherers, etc., are organs of government.(noun)
source: webster1913
verb (v)
To supply with an organ or organs; to fit with organs; to organize.(verb)