Sports jacket (6)
I believe the answer is:
blazer
'sports jacket' is the definition.
(synonyms)
This is the entire clue.
(Other definitions for blazer that I've seen before include "Man's jacket, sounds hot" , "Man's garment" , "Light single-breasted (school or club) jacket" , "Loose-fitting jacket for school or team" , "Summer sporting jacket" .)