A symbol is a drawing, shape, or object that represents an idea, object, or amount of something.
The most common symbols are letters, which are symbols of words and sounds. A symbol can be an actual object (such as the cross, a symbol of Christianity or a scepter, a symbol of royalty and power), or a certain color or pattern. Symbols are used often in poetry and other types of literature, sometimes as metaphors or similes.
A national emblem is a symbol for a certain country.