Folder (noun)

1. A cover or container for holding papers or documents together.
2. A file or directory used for organizing computer files.
3. A piece of equipment or a machine used for folding sheets or clothes.

Origin:

Late middle english: from old french foldeur, from folde "fold".

Examples:

1. She put the documents in a folder.
2. The folder contained all of his important papers.
3. He organized his computer files in different folders.
4. The folder in the printer helped to fold the sheets of paper.
5. The folder on the laundry machine was used to fold the clothes.