organ
UK[ˈɔːɡən]US[ˈɔːrɡən]
n
A part of the body of an animal or plant that performs a particular job.
n
A large musical instrument with pipes of different lengths, played by pressing keys on a keyboard and forcing air through the pipes.
n
An official organization that is part of a larger group and has a special purpose.
Etymology
The word 'organ' entered English via Old French and Latin from the Greek word 'organon', meaning "tool, instrument, or bodily organ." The Greek term itself derives from the Proto-Indo-European root werg- meaning "to do, to work." This etymological journey from a general concept of a "working tool" to the specific modern meanings is logical: a bodily organ is a part that "works" for the body, a musical organ is an "instrument" that produces sound, and an official organization is a "tool" or instrument for achieving a purpose. The semantic evolution reflects a specialization from a broad instrumental sense to more concrete and abstract applications.
Analysis
The word 'organ' is a simplex loanword from Latin and Greek. It is not productively segmented into smaller, meaningful morphemes in modern English.
Examples
The heart is a vital organ that pumps blood throughout the body.
The majestic sound of the church organ filled the cathedral.
The United Nations is the primary organ for international diplomacy.