Idol originally refers to an image or representation of a god used as an object of worship.
In modern usage, idol most commonly means a person who is admired and adored by many people, especially a pop star or celebrity.
The term "idol" can also refer to:
1. A television program featuring young performers competing to become pop stars (e.g. "American Idol")
2. Someone or something that is greatly loved or admired (e.g. "He was her childhood idol")
3. In K-pop culture, specifically refers to trained entertainers under management companies