noun (n)

• (computer science) a graphic symbol (usually a simple picture) that denotes a program or a command or a data file or a concept in a graphical user interface(noun.communication)

  source: wordnet30
• a visual representation (of an object or scene or person or abstraction) produced on a surface(noun.artifact)

  Synonym:
  ikon, image, picture
  

  source: wordnet30
• a conventional religious painting in oil on a small wooden panel; venerated in the Eastern Church(noun.artifact)

  Synonym:
  ikon
  

  source: wordnet30
• An image or representation; a portrait or pretended portrait.(noun)

  source: webster1913
• A sacred picture representing the Virgin Mary, Christ, a saint, or a martyr, and having the same function as an image of such a person in the Latin Church.(noun)

  source: webster1913