Answer: wreathing

AnswerCrossword Clue
wreathing(esp. of smoke) Move with a curling motion
wreathingWREATHE, to shape into a wreath, also WRETHE
wreathingForm (flowers, leaves, or stems) into a wreath
wreathingCover, surround, or encircle (something)
wreathingTwist or entwine (something flexible) around or over something