Film n.
 1. A thin skin; a pellicle; a membranous covering, causing opacity.
    He from thick films shall purge the visual ray.   --Pope.
 2. hence, any thin layer covering a surface.
 3. A slender thread, as that of a cobweb.
    Her whip of cricket's bone, the lash of film.   --Shak.
 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.