A briefcase is a type of bag used for carrying papers and documents.
You've probably seen people walking down the street or into an office building with one slung over their shoulder. That's because a briefcase is a common item for professionals to carry important papers, contracts, and other work documents in a neat and organized way. It usually has a handle on top so you can easily carry it around, and often has compartments inside to keep everything tidy. Some people might use a laptop bag or backpack instead of a traditional briefcase, but this term usually refers specifically to that classic, old-fashioned style of bag with a handle.
A case used for carrying documents, especially for business.
