Origin: 1400-1500 French jaquet, from jaque short coat
1 a short light coat: a denim jacket a ski jacket2the part of a suit that covers the top part of your body: a jacket and tie3a dust jacket4a cover that surrounds and protects some types of equipment5a stiff paper cover that protects a record [Origin: 1400–1500 French jaquet, from jaque short coat] → see alsodinner jacket, life jacket, straitjacket