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noun [countable] British English pronunciation: file /faɪl/ 
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singularfile
pluralfiles
  1. 1
    a set of papers, documents, or records that you keep because they contain information

    The insurance company may want to check your medical files.

    keep/hold a file on something/someone:

    The company keeps personal files on all its employees.

    file on:

    The police file on this particular case has now been closed.

    on file (=kept in a file):

    We have all your details on file.

    1. a.
      computing a set of information on a computer

      First, you have to create a new file.

      I've forgotten the name of the file.

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