(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
a perceptible indication of something not immediately apparent (as a visible clue that something has happened); "he showed signs of strain"; "they welcomed the signs of spring"
anything (such as a document or a phonograph record or a photograph) providing permanent evidence of or information about past events; "the film provided a valuable record of stage techniques"