Moves aimlessly (6)
I believe the answer is:
drifts
'moves aimlessly' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for drifts that I've seen before include "problems with snow" , "Wanders around" , "proceeds without purpose" , "piles!" , "Moves slowly, carried by a current of air or water" .)