Wind resulting from unsettled weather (7)
I believe the answer is:
wreathe
'wind' is the definition.
(I know that wind can be written as wreathe)
'unsettled weather' is the wordplay.
'unsettled' indicates anagramming the letters.
'weather' anagrammed gives 'WREATHE'.
'resulting from' acts as a link.
(Other definitions for wreathe that I've seen before include "(E.g smoke) curl" , "Surround, encircle" , "wind" , "Encircle with flowers" , "Weather (anag.)" .)