Meaning of “file” - Learner’s Dictionary

file

noun uk us /faɪl/
COMPUTER [ C ]

A2 a piece of text, a picture, or a computer program stored on a computer:

Do you want to download all these files?
INFORMATION [ C ]

A2 a collection of information and documents about someone or something:

The school keeps files on all its pupils.
CONTAINER [ C ]

a box or folded piece of thick paper used to put documents in:

He keeps all his bank statements in a file.
on file

If information is on file, it is recorded and stored somewhere:

The police have kept all the details on file.
TOOL [ C ]

a small tool with a rough edge that is used to make a surface smooth:

a nail file
in single file

in a line with one person following the other

→ See also the rank and file

(Definition of “file noun” from the Cambridge Learner’s Dictionary © Cambridge University Press)