The Collaborative International Dictionary of English v.0.48:

Film \Film\, v. t.
   1. To cover with a thin skin or pellicle.
      [1913 Webster]

            It will but skin and film the ulcerous place.
                                                  --Shak.
      [1913 Webster]

   2. to make a motion picture of (any event or literary work);
      to record with a movie camera; as, to film the
      inauguration ceremony; to film Dostoevsky's Crime and
      Punishment; or Tolstoy's War and Peace.
      [PJC]

The Collaborative International Dictionary of English v.0.48:

Film \Film\, n. [AS. film skin, fr. fell skin; akin to fylmen
   membrane, OFries. filmene skin. See Fell skin.]
   1. A thin skin; a pellicle; a membranous covering, causing
      opacity.
      [1913 Webster]

            He from thick films shall purge the visual ray.
                                                  --Pope.
      [1913 Webster]

   2. hence, any thin layer covering a surface.
      [1913 Webster +PJC]

   3. A slender thread, as that of a cobweb.
      [1913 Webster]

            Her whip of cricket's bone, the lash of film.
                                                  --Shak.
      [1913 Webster]

   4. (Photog.) The layer, usually of gelatin or collodion,
      containing the sensitive salts of photographic plates.
      [PJC]

   5. (Photog.) a flexible sheet of celluloid or other plastic
      material to which a light-sensitive layer has been
      applied, used for recording images by the processes of
      photography. It is commonly used in rolls mounted within
      light-proof canisters suitable for simple insertion into
      cameras designed for such canisters. On such rolls,
      varying numbers of photographs may be taken before the
      canister needs to be replaced.
      [PJC]

   6. a motion picture.
      [PJC]

   7. the art of making motion pictures; -- used mostly in the
      phrase the film.
      [PJC]

   8. a thin transparent sheet of plastic, used for wrapping
      objects; as, polyethylene film.
      [PJC]

   Celluloid film (Photog.), a thin flexible sheet of
      celluloid, coated with a sensitized emulsion of gelatin,
      and used as a substitute for photographic plates.

   Cut film (Photog.), a celluloid film cut into pieces
      suitable for use in a camera.
      [Webster 1913 Suppl.]

WordNet (r) 3.0 (2006):

film
    n 1: a form of entertainment that enacts a story by sound and a
         sequence of images giving the illusion of continuous
         movement; "they went to a movie every Saturday night"; "the
         film was shot on location" [syn: movie, film,
         picture, moving picture, moving-picture show, motion
         picture, motion-picture show, picture show, pic,
         flick]
    2: a medium that disseminates moving pictures; "theater pieces
       transferred to celluloid"; "this story would be good cinema";
       "film coverage of sporting events" [syn: film, cinema,
       celluloid]
    3: photographic material consisting of a base of celluloid
       covered with a photographic emulsion; used to make negatives
       or transparencies [syn: film, photographic film]
    4: a thin coating or layer; "the table was covered with a film
       of dust"
    5: a thin sheet of (usually plastic and usually transparent)
       material used to wrap or cover things [syn: film, plastic
       film]
    v 1: make a film or photograph of something; "take a scene";
         "shoot a movie" [syn: film, shoot, take]
    2: record in film; "The coronation was filmed"

Moby Thesaurus II by Grady Ward, 1.0:

289 Moby Thesaurus words for "film":
   3-D, Cinemascope, Cinerama, London fog, London special, Photostat,
   Rabelaisianism, Technicolor, Western, X-rated movie, X-ray, Xerox,
   actor-proof, all-star, animated cartoon, apply to, backing, ballet,
   balletic, bawdiness, bawdry, bibliofilm, bipack,
   black-and-white film, blanket, blear, block, blue movie, blur,
   bulletin board, calotype, canopy, capture on film, card, cartoon,
   cartridge, catalog card, chiller, cine, cinema, cinematic,
   cinematographic, cloak, clothe, cloud, coat, coating, collop,
   color film, color negative film, cope, cover, cover up, covering,
   cowl, creepie, curtain, cut, deal, defocus, dim, dirt, dirtiness,
   dirty movie, disc, disk, documentary, documentary film, dope,
   dramatic, dramatical, dramaturgic, drisk, drizzling mist,
   dry plate, dusting, eclipse, educational film, emulsion, enamel,
   erotic art, erotic literature, erotographomania, facing, fade away,
   feature, fescenninity, feuille, file, filing card, filmic, filth,
   filthiness, flap, flick, flicker, fog, foil, fold, foulness, frame,
   frost smoke, fur, gauze, glaze, ham, hammy, haze, haziness,
   histrionic, hood, horror picture, horse opera, iconolagny,
   index card, integument, lacquer, lamella, lamina, laminated glass,
   laminated wood, lap, lay on, lay over, layer, leaf, legitimate,
   lewdness, library catalog, lose resolution, magnetic tape, mantle,
   mask, melodramatic, membrane, microcard, microdot, microfiche,
   microfilm, milked, mist, mistiness, monochromatic film,
   monodramatic, motion picture, motion-picture film,
   motion-picture show, movie, moving picture, muffle, mug, murkiness,
   nastiness, negative, newsreel, nudie, obduce, obscenity, obscure,
   occult, offensiveness, operatic, orthochromatic film, overacted,
   overlay, overplayed, overspread, pack, paint, pale, pan,
   panchromatic film, pane, panel, patina, pea soup, pea-soup fog,
   peasouper, peel, pellicle, phonograph record, photodrama,
   photograph, photographic paper, photomap, photoplay, pic, picture,
   picture show, plait, plank, plate, plating, platter, ply, plywood,
   pornographic art, pornographic film, pornographic literature,
   pornographomania, pornography, preview, printing paper, put on,
   radiograph, rasher, revetment, ribaldry, roentgenograph, roll,
   safety glass, salaciousness, salacity, scale, scenic, scoreboard,
   scorecard, scoresheet, screen, scum, scurrility, sexploitation,
   sheet, shield, shoot, short, show, silent, silent film, skin,
   skin flick, slab, slat, slice, slip, smog, smut, smuttiness, snap,
   snapshoot, snapshot, sneak preview, soft-core pornography, soften,
   sound film, sound track, sound-on-film, soundstripe,
   spaghetti Western, spectacular, spread over, stag film, stagelike,
   stageworthy, stagy, starstruck, steam, stellar, superimpose,
   superpose, table, tablet, take, take a photograph, talbotype,
   talkie, talking picture, tape, theaterlike, theatrical, thespian,
   thriller, thrown away, ticker tape, trailer, tripack, underacted,
   underground film, underplayed, vapor, varnish, vaudevillian,
   vehicle, veil, veneer, video, videotape, vileness, wafer