One still is first to make a snowman (4)
I believe the answer is:
yeti
'a snowman' is the definition.
(I've seen this before)
'one still is first' is the wordplay.
'one still' becomes 'yet' (yet can mean still or so far).
'is first' becomes 'i' (yst letter of 'is').
'yet'+'i'='YETI'
'to make' acts as a link.
(Other definitions for yeti that I've seen before include "Tibetan wild man" , "something abominable" , "creature of dubious existence" , "Himalayan wild man" , "strange creature" .)