also: ジャケツ
noun
Refers to a short coat or outer garment, similar to English 'jacket'.
寒いのでジャケットを着て出かけた。
I went out wearing a jacket because it was cold.
この本のジャケットはとてもきれいだ。
The dust cover of this book is very beautiful.
noun
CD jacket; record jacket
The outer sleeve or case for a CD, vinyl record, or similar media.
CDのジャケットにサインをもらった。
I got an autograph on the CD jacket.