This wind destroyed steelyard, no end (8)
I believe the answer is:
easterly
'this wind' is the definition.
(easterly is a kind of wind)
'destroyed steelyard no end' is the wordplay.
'destroyed' indicates anagramming the letters.
'no end' means to remove the last letter.
'steelyard' with its final letter removed is 'steelyar'.
'steelyar' with letters rearranged gives 'EASTERLY'.
(Other definitions for easterly that I've seen before include "Year's let (anag) - direction of 15" , "bitter blow for the UK" , "Wind coming from Britain, say" , "Wind to westward" , "A wind blowing towards the west" .)