Definition of "briefcase"

briefcase

/ˈbɹiːfˌkeɪs/

noun
plural briefcases
1. A case used for carrying documents, especially for business.
2. (computing) In Microsoft Windows, a folder that supports file synchronization between itself and another folder.
  Quotations
  You create a briefcase called Files where you store all your important documents. The briefcase is stored on your Tablet PC's C: drive, and the source files reside on your server.
  2004, Craig Forrest Mathews, Absolute Beginner's Guide to Tablet PCs, page 202