Focus on the pronunciation of file
› to store information or documents carefully so that they are easy to find, either in a place such as a folder or desk, or on a computer: The effective e-manager will make it clear where on the system to file documents.file sth under sth An organization with initials in the name, eg W H Smith, will be filed under the initial, in this case W.file sth away It's tempting to file away all the paperwork relating to your pension and forget about it.
› LAW to officially record something such as a complaint: file a lawsuit/a suit/charges He is planning to file a lawsuit against the current chairman for an alleged violation of a clause in his contract. file a complaint/claim/petition
› ACCOUNTING to officially send something such as your accounts: Any gain or loss should be reported when you file your tax return. It was found that the company had failed to file accounts at Companies House.