Metaphorically ? Is that how the website you quoted explain it away?
o0o, so you think I quoted from a website? nice try but no, I did not. I do not wish to resort to websites to prove my argument. However, I will give you this because I wish exact definition:
met·a·phor ( P ) Pronunciation Key (mt-fôr, -fr)
n.
A figure of speech in which a word or phrase that ordinarily designates one thing is used to designate another, thus making an implicit comparison, as in “a sea of troubles” or “All the world's a stage” (Shakespeare).
One thing conceived as representing another; a symbol: “Hollywood has always been an irresistible, prefabricated metaphor for the crass, the materialistic, the shallow, and the craven” (Neal Gabler).
[Taken from www.dictionary.com ]
You know what is really funny is that you accuse me of a website to back my claim, when you use a website to refute it! talk about hypocrisy!