petasos

noun

pet·​a·​sos ˈpe-tə-səs 

variants or petasus

: a broad-brimmed low-crowned hat worn by ancient Greeks and Romans

especially : the winged hat of Hermes

Word History

Etymology

Latin & Greek; Latin petasus, from Greek petasos; akin to Greek petannynai to spread out

First Known Use

1577, in the meaning defined above