Briefcase (noun)

1. A portable case for carrying papers, books, and other documents.
2. A flat, rectangular case with a handle and a hinged lid, used for carrying papers, documents, and other small items.

Origin:

From brief ("letter") + case, first recorded in the early 20th century.

Examples:

1. He carried his briefcase to work every day.
2. She had her laptop in her briefcase.
3. He opened his briefcase to take out the documents.
4. The lawyer had a briefcase full of evidence.
5. The salesman had a briefcase full of brochures.