A file for storing documents that opens by expanding like an accordion.

plural of accordion file

A double line, especially, a queue two persons wide.

(computing) The part of the data division of a COBOL program that describes the format of the logical records associated with external files to be accessed by the progrem

plural of flat file

plural of circular file

plural of nail file

(transitive) to remove using a file (the tool) / (intransitive) to depart in single file

(transitive) To reduce the size of something by filing (using the abrasive effects of a file).

plural of serial file