from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Alternative spelling of willy willy: a severe tropical cyclone or dust devil.
from The Century Dictionary and Cyclopedia
- n. A small whirl of wind carrying up black clouds of dust and often leaves and grass. [Interior of Australia.]
- n. A violent storm of wind and rain on the northwest coast of Australia.
Sorry, no etymologies found.
And there are laws governing amphethemine use, which almost assuredly included filling large coffee pots full of "lead," as they would call it, or dispensing greenies willy-willy.
Often a monsoon is pre-cursed by a dust storm that grows out of the desert like a willy-willy.