petasus
Concise Oxford English Dictionary © 2008 Oxford University Press:
petasus /ˈpɛtəsəs/
▶noun a hat with a low crown and broad brim, worn in ancient Greece.
■ Greek Mythology a winged hat of this type worn by the god Hermes.
– origin via L. from Gk petasos.
'petasus' also found in these Oxford entries:

