What is the meaning of Jacket?

Any of certain types of outerwear.

1. A piece of clothing worn on the upper body outside a shirt or blouse, often waist length to thigh length.
2. A piece of a person's suit, beside trousers and, sometimes, waistcoat; coat .
3. An outer garment (usually white) intended for chefs and which may be taken to signify status.
4. A vest ; a waistcoat .
5. A letter jacket.

   A piece of clothing worn on the upper body outside a shirt or blouse, often waist length to thigh length.

   A piece of a person's suit, beside trousers and, sometimes, waistcoat; coat .

   An outer garment (usually white) intended for chefs and which may be taken to signify status.

   A vest ; a waistcoat .

   A letter jacket.

   A lifejacket.

   A protective or insulating cover for an object (e.g. a book, bullet, hot water tank, vinyl record).

   A file jacket.

   In ordnance, a strengthening band surrounding and reinforcing the tube in which the charge is fired.

   The tough outer skin of a baked potato.

   A police record.

   A bastard child, in particular one whose father is unaware that he is not the child’s biological father.

   To confine (someone) to a straitjacket.

   To enclose or encase in a jacket or other covering.

   Source: wiktionary.org