I'm getting old. From the title I thought you meant this:-
An icon (from Greek εἰκών eikōn "image") is a religious work of art, most commonly a painting, from Eastern Christianity and in certain Eastern Catholic churches. More broadly the term is used in a wide number of contexts for an image, picture, or representation; it is a sign or likeness that stands for an object by signifying or representing it either concretely or by analogy, as in semiotics; by extension, icon is also used, particularly in modern culture, in the general sense of symbol — i.e. a name, face, picture, edifice or even a person readily recognized as having some well-known significance or embodying certain qualities: one thing, an image or depiction, that represents something else of greater significance through literal or figurative meaning, usually associated with religious, cultural, political, or economic standing.