Icon originally meant a small religious painting. Its modern meanings are small pictures, computer graphic symbols, admired person, etc.
There are many good icon paintings this church.
Quiche is an iconic dish of the Lorraine region.
The US first President was transformed into an icon, a national symbol whose portrait would adorn the dollar bill
Merriam-Webster Online Dictionary
icon (noun)1.
a usually pictorial representation - image
2.
Late Greek from Greek a conventional religious image typically painted on a small wooden panel and used in the devotions of Eastern Christians
3.
an object of uncritical devotion - idol
4.
- emblem symbol the house became an icon of 1960's residential architecture Paul Goldberger
5.
a) a sign (as a word or graphic symbol) whose form suggests its meaning
b) a graphic symbol on a computer display screen that usually suggests the type of object represented or the purpose of an available function
