PETASUS Meaning of PETASUS in English [ 'pɛtəsəs ]■ 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.Originvia L. from Gk petasos . Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004