organ

1. (by extension) A body of an organization dedicated to the performing of certain functions.broadly

2. (obsolete) A device, apparatus.Examples: "This Organ is called a Thermometer, or Thermoscope, because the degrees of Heat and Cold are measured and marked by it."obsolete

3. (music) A musical instrument that has multiple pipes which play when a key is pressed (the pipe organ), or an electronic instrument designed to replicate such.Examples: "He was thinking; but the glory of the song, the swell from the great organ, the clustered lights, […], the height and vastness of this noble fane, its antiquity and its strength—all these things seemed to have their part as causes of the thrilling emotion that accompanied his thoughts."

4. (slang) The penis.Examples: "If the Snake has an unmistakeable resemblance to the male organ in its active state, the foliage of the tree or bush is equally remindful of the female."slang

5. (historical, military) An Asian form of mitrailleuse.Examples: "Lieutenant Roberts was also severely wounded by a missile, or weapon called an Organ, which is composed of about thirty-six gun barrels so joined as to fire at once."historical