Meaning

1. An image, symbol, picture, portrait, or other representation usually as an object of religious devotion.
2. A type of religious painting portraying a saint or scene from Scripture, often done on wooden panels.
3. A person or thing that is the best example of a certain profession or some doing.
4. A small picture that represents something.
5. (informal) A small picture that represents something.
6. A word, character, or sign whose form reflects and is determined by the referent; onomatopoeic words are necessarily all icons.