Blustering fellow crossing street (5)
I believe the answer is:
gusty
'blustering' is the definition.
(synonyms)
'fellow crossing street' is the wordplay.
'fellow' becomes 'guy' (both can mean a man).
'crossing' indicates putting letters inside (to cross can mean to go over or around).
'street' becomes 'st' (abbreviation).
'guy' enclosing 'st' is 'GUSTY'.
(Other definitions for gusty that I've seen before include "Of wind, blowing in bursts" , "Windy" , "Blowing intermittently" .)