Whirlwind of Dirt or Sand
Puzzle 5 of Brad Pitt Easy Pack
Question is: Whirlwind of Dirt or Sand
and the answer is: DUSTDEVIL
Word Meaning:
DUST DEVIL — A small atmospheric vortex appearing in clear, dry conditions, made visible by swirling dust (or dirt or sand) picked up from the ground.
Definitions from Wiktionary.