Floats (6)
I believe the answer is:
drifts
'floats' is the definition.
('drift' can be a synonym of 'float')
This is all the clue.
(Other definitions for drifts that I've seen before include "Wanders around" , "piles!" , "Floats along aimlessly" , "problems with snow" , "Heaps of snow blown by the wind" .)