a fully differentiated structural and functional unit in an animal that is specialized for some particular function
"The liver acts as a vital organ by filtering toxins from the blood to maintain homeostasis."
a government agency or instrument devoted to the performance of some specific function
"The Census Bureau is an organ of the Commerce Department"
(music) an electronic simulation of a pipe organ
"The band used a digital synthesizer to create the sound of a grand pipe organ during their performance."
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
"The choir accompanied themselves on an organ while the soloist played a haunting melody."
a free-reeded instrument with a piano keyboard in which air is forced through the reeds by bellows
"The choir performed with us on a large pipe organ that filled the concert hall with rich, resonant tones."
A larger part of an organism, composed of tissues that perform similar functions.
"The liver is a vital organ in the human body responsible for filtering toxins from the blood."
In plain English: An organ is any part of your body that works together to do a specific job, like your heart pumping blood or your lungs breathing air.
"The doctor examined her heart with a stethoscope during the annual checkup."
Usage: Use the noun form when referring to a distinct body structure like a heart or liver made of specialized tissue groups. The verb is rarely used in casual conversation and typically appears only in technical contexts regarding mechanical installation.
To supply with an organ or organs; to fit with organs.
"The luthier spent weeks trying to organize the soundboard, but he could not find a way to re-organize it without ruining its resonance."
In plain English: To organize something means to arrange it neatly so everything is in order and easy to find.
"The company plans to organically grow its business over the next few years by focusing on local markets first."
The word "organ" comes from the Latin organum, which was borrowed from Ancient Greek for "an instrument or tool." It originally referred to a musical device or a body part used for sensation before taking on its modern meaning.