While studying the etymology of the word, I found that it comes from gryphus, the Latin for griffin. In fact griffin also happens to be one meaning of grifo. And as we all know, griffin is a mythical beast with the body of a lion and the head of an eagle. Griffin is also the name of a species of vultures.
What I don't understand then is how grifo became the Spanish for a water faucet. It seems random but I am sure there's some logic behind it. Anyone got any idea?