[机] 涡旋夹头

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}.