Wrapper (noun)

1. Something that covers or encloses something else, especially a protective or ornamental covering.
2. A flat, thin, usually rectangular piece of paper, metal, or plastic that is folded around a product and sealed to keep it fresh or to provide information about it.
3. A thing that wraps or is used for wrapping something.

Origin:

Middle english wrappere, from wrap + -er.

Examples:

1. She removed the wrapper from the chocolate bar.
2. The wrapper on the gift was beautifully decorated.
3. He tore open the wrapper of the new DVD.
4. The wrapper of the sandwich was discarded.
5. She carefully folded the wrapper and put it in her purse.