SYMBOL, n. 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.
SIREN, n. One of several musical prodigies famous for a vain attempt to dissuade Odysseus from a life on the ocean wave. Figuratively, any lady of splendid promise, dissembled purpose and disappointing performance.
SLANG, n. The speech of one who utters with his tongue what he thinks with his ear, and feels the pride of a creator in accomplishing the feat of a parrot. A means (under Providence) of setting up as a wit without a capital of sense.