organ

noun
UK /ˈɔː.ɡən/
US /ˈɔːr.ɡən/

A part inside your body that does a special job.

The heart is an organ that pumps blood.


OTHER MEANINGS

2. A large musical instrument with keys and pipes that makes music.

She plays the organ at church every Sunday.

3. A group or organization that does a particular job.

The newspaper is an organ of the local government.

4. A part of a plant that has a special function, like a leaf or root.

The flower is the reproductive organ of the plant.