Binder (noun)

1. A device or material used to hold things together, such as papers or parts of a machine.
2. A person or thing that binds or holds together.

Origin:

From middle english bindere, from old english bindere, from proto-germanic *bindōną ("to bind"), from proto-indo-european *bʰeyd- ("to split").

Examples:

1. She used a binder to organize her papers.
2. He used a binder to hold the pages of his book together.
3. The binder was made of plastic and had a ring mechanism.
4. The binder held the documents together.
5. The binder was labeled "Meeting Notes".