Answer: milling

AnswerCrossword Clue
MILLINGWandering aimlessly
milling(of people or animals) Move around in a confused mass
millingThicken (wool or another animal fiber) by fulling it
millingCut or shape (metal) with a rotating tool
millinga corrugated edge on a coin
millingGrind or crush (something) in a mill
millingProduce regular ribbed markings on the edge of (a coin) as a protection against illegal clipping