caduceus
/kəˈdjuːsɪəs/noun
(pl.caducei /-sɪaɪ/)
- an ancient Greek or Roman herald's wand, typically one with two serpents twined round it, carried by the messenger god Hermes or Mercury（古希腊或罗马的）传令官节杖（尤指信使神赫耳墨斯或墨丘利所持的二蛇盘绕节杖）。
词源
Latin, from Doric Greek karukeion from Greek kērux 'herald'.