1. A group of documents related by use or topic, typically housed in a folder (or a group of folders for a large file). – 2. plural (files) · The whole of a collection of records. – 3. Computing · Collections of data stored for use by a computer; see data file. – v. ~ 4. To store documents in an organized collection for safekeeping and future reference. – 5. To present a document to the clerk of a court or recorder so that it can be entered into the official record. – 6. To initiate a lawsuit.