file

n.

1. A receptacle for keeping papers in order

   folder, filing cabinet, letter file, card file, letter case, pigeonhole, repository, organizer, drawer; see also folder 2.

2. An orderly collection of papers

   card index, card file, portfolio, record, data, classified index, list, ready reference list, register, dossier, notebook, docket, census; see also catalog.

3. Steel abrasive

   rasp, steel, sharpener, emery board.

   Types of files include: flat, round, rat-tail, triangular, saw, fingernail, wood, 10-inch, 12-inch, etc.

4. A line

   rank, row, column; see line 1.

on file

file

v.

1. To arrange in order

   classify, index, deposit, categorize, catalog, record, register, list, arrange, interfile, pigeonhole, docket; see also classify.

2. To use an abrasive

   abrade, rasp, scrape, smooth, rub down, level off, finish, sharpen, hone, grind.