The caduceus [kuh-doo-see-uhs] is a herald’s staff, a symbolic object representing Hermes (or the Roman Mercury), and by extension trades, occupations or undertakings associated with the god. It is today typically depicted as a short staff entwined by two serpents in the form of a double helix, and is sometimes surmounted by wings. The caduceus is sometimes used as a symbol of medicine and/or medical practice, especially in North America, due to widespread confusion with the traditional medical symbol, the rod of Asclepius, which has only a single snake and no wings.
The Daily Omnivore 
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