a small whirlwind 10–100 feet (3–30 meters) in diameter and from several hundred to 1000 feet (305 meters) high, common in dry regions on hot, calm afternoons and made visible by the dust, debris, and sand it picks up from the ground.
He enjoys watching the sky for weird clouds and the occasional dust devil.
In this drawing you can see that the arrows would spin the dust devil counterclockwise.
British Dictionary definitions for dust devil
dust devil
noun
1.
a strong miniature whirlwind that whips up dust, litter, leaves, etc into the air
Encyclopedia Article for dust devil
small, brief whirlwind occurring most frequently in the early afternoon when a land surface is heating rapidly. Dust devils are occasionally made visible by the lofting of dust, leaves, or other loose matter from the surface. See also whirlwind.
Learn more about dust devil with a free trial on Britannica.com