Noun

1. The entering of a legal document into the public record
2. A fragment rubbed off by the use of a file
3. The act of using a file (as in shaping or smoothing an object)
4. Preservation and methodical arrangement as of documents and papers etc.

Verb

1. Record in a public office or in a court of law
2. Smooth with a file
3. Proceed in line
4. File a formal charge against
5. Place in a container for keeping records