Poses with leaders somewhere in the snow (4)
I believe the answer is:
sits
'poses' is the definition.
(sitting is a kind of posing)
'leaders somewhere in the snow' is the wordplay.
'leaders' indicates taking the first letters.
The initial letters of 'somewhere in the snow' is 'SITS'.
'with' is the link.
(Other definitions for sits that I've seen before include "Is in session" , "Takes a chair" , "Takes an exam" , "Poses for portrait" , "Perches" .)