Here's a more detailed description:
* Staff: It's a slender, often golden, rod.
* Serpents: The serpents are usually depicted as green or blue, with their tails intertwined at the top of the staff.
* Wings: The serpents have two wings each, often depicted as feathery and spread out.
* Top: At the top of the staff, where the serpents' tails meet, there is often a knob or a pair of small spheres.
Symbolism: The caduceus is a symbol of healing, medicine, and commerce. The intertwined serpents symbolize the duality of life and death, while the wings represent speed and swiftness. The staff itself is a symbol of authority and power.
It's important to note that the caduceus is often confused with the Rod of Asclepius, which is a similar symbol but only has one snake without wings. The Rod of Asclepius is the more correct symbol of medicine, but the caduceus is widely recognized as well.