IPA: /ˈaɪdəl/
KK: /ˈaɪdəl/
A person or thing that is greatly admired or revered, often to an excessive degree.
Many young fans consider pop stars to be their idols.
Idol comes from the Latin word "idolum" (meaning an image or representation) which is derived from the Greek "eidolon" (meaning a phantom or image). The word "idol" refers to an image or representation that is worshipped or revered.
Think of an 'image' ('eidolon') that is 'worshipped' — that's what an idol represents.