While playing the organ the organist had an organ failure, his heart gave out.
Organ
I just love the sound of a pipe organ.
The appendix is a vestigial organ.
The organ cells multiply very quickly in a cancerous organ.
I just love the sound of an old-fashioned pipe organ. The skin is the human body's largest organ.
She plays the organ from her heart. The liver and kidneys are internal organs.
I played the mouth organ at the concert last night.
Organ is a noun. Your eyes are an organ of sight. The red flesh of the organ pipe cactus supposedly tastes better than watermelon.
I don't really know it
Your liver is a very important organ.
It is a noun so use it as the subject of a sentence. An organ is a musical instrument. The organ that pumps blood is the heart. 'Red Alert' is the official organ of the Communist Party. Here organ means a periodical such as a newsletter or magazine.
All bodies have multiple organs. So, all bodies have organ systems.