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jacket

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jacket/ˈʤækət/noun
pluraljackets
jacket
/ˈʤækət/
noun
pluraljackets
Learner's definition of JACKET  
[count]
: a piece of clothing that is worn on your upper body over another piece of clothing (such as a shirt) : a usually short and light coat
— see color picture on this pagesee also dinner jacket, flak jacket, life jacket, sports jacket, straitjacket
: an outer covering: such as
: a paper cover that protects a book and that can be removed : dust jacket
   b  chiefly US  : a paper, cardboard, or plastic envelope for holding a record, CD, or DVD
— called also sleeve
— see also yellow jacket
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