/ ˈɔːgən; NAmE ˈɔːrgən/ noun
1.
a part of the body that has a particular purpose, such as the heart or the brain; part of a plant with a particular purpose :
the internal organs
the sense organs (= the eyes, ears, nose, etc.)
the sexual / reproductive organs
an organ transplant / donor
2.
(especially humorous ) a penis :
the male organ
3.
(also ˈpipe organ ) a large musical instrument with keys like a piano. Sounds are produced by air forced through pipes :
She plays the organ in church.
organ music
—compare harmonium
4.
a musical instrument similar to a pipe organ, but without pipes :
an electric organ
—see also barrel organ , mouth organ
5.
( formal ) an official organization that is part of a larger organization and has a special purpose :
the organs of government
6.
( formal ) a newspaper or magazine that gives information about a particular group or organization; a means of communicating the views of a particular group :
The People's Daily is the official organ of the Chinese Communist Party.
••
WORD ORIGIN
late Old English , via Latin from Greek organon tool, instrument, sense organ, reinforced in Middle English by Old French organe .