file
UK[faɪl]US[faɪl]
n
A folder, box, or other container for storing loose papers in an organized way.
n
A collection of information stored on a computer under a single name.
n
A line of people or things one behind another.
v
To place a document in a folder, box, or other container for storage.
v
To officially submit a document or application to an authority.
v
To walk in a line, one behind another.
Etymology
The word 'file' presents a fascinating case of semantic convergence from a single Latin root. It originates from Latin 'filum', meaning 'a thread'. This core concept branched into two distinct yet logically connected modern meanings. The sense of a 'tool for smoothing' (a related but less common meaning) comes from the idea of a threaded wire used for abrasion. More centrally, the concept of a 'thread' evolved into the method of storing papers by stringing them on a wire or cord, giving rise to the meanings of both a 'folder for documents' and the 'act of storing them'. Similarly, the idea of people or objects arranged in a single line is a direct metaphorical extension of a 'thread' or line. Thus, a single ancient idea—the thread—weaves together the modern concepts of orderly storage, linear arrangement, and submission (placing into order).
Analysis
The modern English word 'file' is a simplex word derived from a single root. Its two primary meanings originate from two distinct but phonetically convergent historical sources: 1) From Old French 'fil' (meaning 'thread'), from Latin 'filum'. 2) From Old French 'filer' (meaning 'to string documents on a thread for keeping'), also from Latin 'filum'.
Examples
Please put the invoice in the client file.
I need to file my tax return before the deadline.
The soldiers marched in a single file along the narrow path.