Wander aimlessly in a lot of snow (5)
I believe the answer is:
drift
This clue is a double definition.
'wander aimlessly' is the first definition.
(I've seen this before)
'a lot of snow' is the second definition.
'in' is the link.
(Other definitions for drift that I've seen before include "Wander aimlessly" , "Large heap (of snow)" , "General trend - current travel" , "Move with the current" , "Tenor" .)