Something that is supposed to typify or stand for something else. Many symbols are mere "survivals" - as funereal urns carved on memorial monuments. We cannot stop making them, but we can give them a name that conceals our helplessness.
Ambrose BierceLIVER, n. A large red organ thoughtfully provided by nature to be bilious with. The sentiments and emotions which every literary anatomist now knows to haunt the heart were anciently believed to infest the liver; and even Gascoygne, speaking of the emotional side of human nature, calls it "our hepaticall parte." It was at one time considered the seat of life; hence its name- liver, the thing we live with.
Ambrose Bierce