A small file made of soft metal, or a board covered with fine sandpaper, for filing and shaping one's fingernails and toenails.

A short series of text characters at the end of a computer filename, used to indicate the type of contents and the software that will be required to operate or open it.

A metal file with a circular or rounded shape, used for shaping round surfaces. / (humorous) The trash; the wastebasket.

(idiomatic, humorous) The trash container; the wastebasket.

(computing) The process of making files available to others to download from the Internet. / (computing) The use of a file sharing network, or peer-to-peer software.

Enlisted soldiers in a military organization, as would be arrayed in a grid pattern with ranks and files. / (idiomatic) Members of an organization who are not in leadership positions.

(computing) A file input to a patch program. / (computing) A file containing changes to be applied to another file or files, usually changes made to a computer program that fix a programming bug.

small fragments of iron, filed from a bar; used to visualize the presence of a magnetic field, and as a food additive

To exit in one or more single file lines.

(of a line or queue) One person wide.