Noun

1. A set of related records (either written or electronic) kept together
2. A line of persons or things ranged one behind the other
3. Office furniture consisting of a container for keeping papers in order
4. A steel hand tool with small sharp teeth on some or all of its surfaces; used for smoothing wood or metal

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