icon

noun

• An image, symbol, picture, or other representation usually as an object of religious devotion.
• (especially Eastern Christianity) A type of religious painting portraying a saint or scene from Scripture, often done on wooden panels.
• (by extension) A person or thing that is the best example of a certain profession or some doing.

  "That man is an icon in the business; he personifies loyalty and good business sense."

• A small picture that represents something (such as an icon on a computer screen which when clicked performs some function.)
• A word, character, or sign whose form reflects and is determined by the referent; onomatopoeic words are necessarily all icons.