线锯
曲线锯

[ noun ]
fine-toothed power saw with a narrow blade; used to cut curved outlines
<noun.artifact>

Saw \Saw\, n. [OE. sawe, AS. sage; akin to D. zaag, G. s["a]ge,
OHG. sega, saga, Dan. sav, Sw. s[*a]g, Icel. s["o]g, L.
secare to cut, securis ax, secula sickle. Cf. {Scythe},
{Sickle}, {Section}, {Sedge}.]
An instrument for cutting or dividing substances, as wood,
iron, etc., consisting of a thin blade, or plate, of steel,
with a series of sharp teeth on the edge, which remove
successive portions of the material by cutting and tearing.

Note: Saw is frequently used adjectively, or as the first
part of a compound.

{Band saw}, {Crosscut saw}, etc. See under {Band},
{Crosscut}, etc.

{Circular saw}, a disk of steel with saw teeth upon its
periphery, and revolved on an arbor.

{Saw bench}, a bench or table with a flat top for for sawing,
especially with a circular saw which projects above the
table.

{Saw file}, a three-cornered file, such as is used for
sharpening saw teeth.

{Saw frame}, the frame or sash in a sawmill, in which the
saw, or gang of saws, is held.

{Saw gate}, a saw frame.

{Saw gin}, the form of cotton gin invented by Eli Whitney, in
which the cotton fibers are drawn, by the teeth of a set
of revolving circular saws, through a wire grating which
is too fine for the seeds to pass.

{Saw grass} (Bot.), any one of certain cyperaceous plants
having the edges of the leaves set with minute sharp
teeth, especially the {Cladium Mariscus} of Europe, and
the {Cladium effusum} of the Southern United States. Cf.
{Razor grass}, under {Razor}.

{Saw log}, a log of suitable size for sawing into lumber.

{Saw mandrel}, a mandrel on which a circular saw is fastened
for running.

{Saw pit}, a pit over which timbor is sawed by two men, one
standing below the timber and the other above. --Mortimer.

{Saw sharpener} (Zo["o]l.), the great titmouse; -- so named
from its harsh call note. [Prov. Eng.]

{Saw whetter} (Zo["o]l.), the marsh titmouse ({Parus
palustris}); -- so named from its call note. [Prov. Eng.]


{Scroll saw}, a ribbon of steel with saw teeth upon one edge,
stretched in a frame and adapted for sawing curved
outlines; also, a machine in which such a saw is worked by
foot or power.


Scroll \Scroll\, n. [A dim. of OE. scroue, scrowe (whence E.
escrow), OF. escroe, escroue, F. ['e]crou entry in the jail
book, LL. scroa scroll, probably of Teutonic origin; cf. OD.
schroode a strip, shred, slip of paper, akin to E. shred. Cf.
{Shred}, {Escrow}.]
1. A roll of paper or parchment; a writing formed into a
roll; a schedule; a list.

The heavens shall be rolled together as a scroll.
--Isa. xxxiv.
4.

Here is the scroll of every man's name. --Shak.

2. (Arch.) An ornament formed of undulations giving off
spirals or sprays, usually suggestive of plant form. Roman
architectural ornament is largely of some scroll pattern.

3. A mark or flourish added to a person's signature, intended
to represent a seal, and in some States allowed as a
substitute for a seal. [U.S.] --Burrill.

4. (Geom.) Same as {Skew surface}. See under {Skew}.

{Linen scroll} (Arch.) See under {Linen}.

{Scroll chuck} (Mach.), an adjustable chuck, applicable to a
lathe spindle, for centering and holding work, in which
the jaws are adjusted and tightened simultaneously by
turning a disk having in its face a spiral groove which is
entered by teeth on the backs of the jaws.

{Scroll saw}. See under {Saw}.