细锉

File \File\ (f[imac]l), n. [AS. fe['o]l; akin to D. viji, OHG.
f[=i]la, f[=i]hala, G. feile, Sw. fil, Dan. fiil, cf. Icel.
[thorn][=e]l, Russ. pila, and Skr. pi[,c] to cut out, adorn;
perh. akin to E. paint.]
1. A steel instrument, having cutting ridges or teeth, made
by indentation with a chisel, used for abrading or
smoothing other substances, as metals, wood, etc.

Note: A file differs from a rasp in having the furrows made
by straight cuts of a chisel, either single or crossed,
while the rasp has coarse, single teeth, raised by the
pyramidal end of a triangular punch.

2. Anything employed to smooth, polish, or rasp, literally or
figuratively.

Mock the nice touches of the critic's file.
--Akenside.

3. A shrewd or artful person. [Slang] --Fielding.

Will is an old file in spite of his smooth face.
--Thackeray.

{Bastard file}, {Cross file}, etc. See under {Bastard},
{Cross}, etc.

{Cross-cut file}, a file having two sets of teeth crossing
obliquely.

{File blank}, a steel blank shaped and ground ready for
cutting to form a file.

{File cutter}, a maker of files.

{Second-cut file}, a file having teeth of a grade next finer
than bastard.

{Single-cut file}, a file having only one set of parallel
teeth; a float.

{Smooth file}, a file having teeth so fine as to make an
almost smooth surface.