WILLY-WILLY Meaning of WILLY-WILLY in English ■ noun ( plural willy-willies ) Austral. a whirlwind or dust storm.Originfrom the Aborig. languages Yindjibarndi or Wemba-wemba. Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004