From Longman Dictionary of Contemporary Englishldoce_901_djacketjack‧et /ˈdʒækɪt/ ●●● S2 W3 noun [countable] 1 
DCCa short light coata leather/denim/linen etc jacket a suede jacket → bomber jacket, dinner jacket, life jacket, straitjacket(1)2 the part of a suit that covers the top part of your body Gene has to wear a jacket and tie to work. tweed jackets → sports jacket3 TCNa stiff piece of folded paper that fits over the cover of a book to protect it SYN dust jacket4 American EnglishTCRD a stiff paper cover that protects a record SYN sleeve British English5 COVERa cover that surrounds and protects some types of machines
DCCa short light coata leather/denim/linen etc jacket a suede jacket → bomber jacket, dinner jacket, life jacket, straitjacket(1)2 the part of a suit that covers the top part of your body Gene has to wear a jacket and tie to work. tweed jackets → sports jacket3 TCNa stiff piece of folded paper that fits over the cover of a book to protect it SYN dust jacket4 American EnglishTCRD a stiff paper cover that protects a record SYN sleeve British English5 COVERa cover that surrounds and protects some types of machinesExamples from the Corpus
jacket• He found himself tending toward a jacket and tie.• I told the bartender it was a jacket, most definitely.• a jacket and tie• She had short dark hair, wore well-cut trousers, a green country jacket and long, mud-splashed boots.• a denim jacket• This will go through a down jacket.• Having taken off their jackets and rolled up their trouser bottoms, the fathers worked barefoot in shirt sleeves.• As a result, the traditional party outfit of flamboyant cravat and tweed jacket has been replaced by the ninety-nine-pound wool suit.• No, at a ceremony at the cenotaph he wore the wrong jacket!a leather/denim/linen etc jacket• He was wearing denim jeans and a denim jacket.• A good pair of jeans like Levi's - and a leather jacket.• Soon afterwards a figure in a leather jacket emerged.• At the very back was a man in a leather jacket.• The day's most successful report is the interview with a young boy accused of stealing a leather jacket.• Ian James walked in during the early hours of the morning and stole a leather jacket and a handbag from the hall.• Police arrested the alleged thief after catching him stuffing a leather jacket and a. 22 caliber revolver under a parked car.• He was wearing a leather jacket with one sleeve torn off.Origin jacket (1400-1500) French jaquet, from jaque “short coat”, probably from jacque “poor farmer”, from the male name Jacques “James” 