definition of
icon

[1] #1 icon 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. wn

[2] #2 icon n. [picture, image, ikon] a visual representation (of an object or scene or person or abstraction) produced on a surface; "they showed us the pictures of their wedding"; "a movie is a series of images projected so rapidly that the eye integrates them". wn

[3] #3 icon n. [ikon] a conventional religious painting in oil on a small wooden panel; venerated in the Eastern Church. wn