sport jacket(n = noun.artifact) blazer, sport coat, sports coat, sports jacket - lightweight single-breasted jacket; often striped in the colors of a club or school;
is a kind of jacket

air jacket, bed jacket, blood sport, bomber jacket, book jacket, bush jacket, cardigan jacket, contact sport, cork jacket, dinner jacket, dolman jacket, donkey jacket, double-breasted jacket, dust jacket, equestrian sport, eton jacket, field sport, full metal jacket, jacket, jacket crown, jacket potato, life jacket, lounging jacket, lumber jacket, mao jacket, mess jacket, monkey jacket, norfolk jacket, outdoor sport, pea jacket, record jacket, shell jacket, single-breasted jacket, ski jacket, smoking jacket, spectator sport, sport, sport car, sport coat, sport fish, sport kite, sport shirt, sport utility, sport utility vehicle, sports jacket, team sport, water jacket, water sport, yellow jacket