Most of winter, terrible wind (5)
I believe the answer is:
twine
'wind' is the definition.
(to twine is to curl or wind around)
'most of winter terrible' is the wordplay.
'most of' means to remove the last letter.
'terrible' indicates anagramming the letters.
'winter' with its last letter taken off is 'winte'.
'winte' is an anagram of 'TWINE'.
(Other definitions for twine that I've seen before include "Coil" , "Twisted cord" , "Strong thread or string" , "weaving" , "Stout string" .)