钩扣铰链
钩与螺旋扣眼

[ noun ]
a kind of fastener used on clothing
<noun.artifact>

Hook \Hook\ (h[oo^]k; 277), n. [OE. hok, AS. h[=o]c; cf. D.
haak, G. hake, haken, OHG. h[=a]ko, h[=a]go, h[=a]ggo, Icel.
haki, Sw. hake, Dan. hage. Cf. {Arquebuse}, {Hagbut}, {Hake},
{Hatch} a half door, {Heckle}.]
1. A piece of metal, or other hard material, formed or bent
into a curve or at an angle, for catching, holding, or
sustaining anything; as, a hook for catching fish; a hook
for fastening a gate; a boat hook, etc.

2. That part of a hinge which is fixed to a post, and on
which a door or gate hangs and turns.

3. An implement for cutting grass or grain; a sickle; an
instrument for cutting or lopping; a billhook.

Like slashing Bentley with his desperate hook.
--Pope.

4. (Steam Engin.) See {Eccentric}, and {V-hook}.

5. A snare; a trap. [R.] --Shak.

6. A field sown two years in succession. [Prov. Eng.]

7. pl. The projecting points of the thigh bones of cattle; --
called also {hook bones}.

8. (Geog.) A spit or narrow cape of sand or gravel turned
landward at the outer end; as, Sandy Hook in New Jersey.
[Webster 1913 Suppl. +PJC]

9. (Sports) The curving motion of a ball, as in bowling or
baseball, curving away from the hand which threw the ball;
in golf, a curving motion in the direction of the golfer
who struck the ball.
[PJC]

10. (Computers) A procedure within the encoding of a computer
program which allows the user to modify the program so as
to import data from or export data to other programs.
[PJC]

{By hook or by crook}, one way or other; by any means, direct
or indirect. --Milton. ``In hope her to attain by hook or
crook.'' --Spenser.

{Off the hook}, freed from some obligation or difficulty; as,
to get off the hook by getting someone else to do the job.
[Colloq.]

{Off the hooks}, unhinged; disturbed; disordered. [Colloq.]
``In the evening, by water, to the Duke of Albemarle, whom
I found mightly off the hooks that the ships are not gone
out of the river.'' --Pepys.

{On one's own hook}, on one's own account or responsibility;
by one's self. [Colloq. U.S.] --Bartlett.

{To go off the hooks}, to die. [Colloq.] --Thackeray.

{Bid hook}, a small boat hook.

{Chain hook}. See under {Chain}.

{Deck hook}, a horizontal knee or frame, in the bow of a
ship, on which the forward part of the deck rests.

{Hook and eye}, one of the small wire hooks and loops for
fastening together the opposite edges of a garment, etc.


{Hook bill} (Zo["o]l.), the strongly curved beak of a bird.


{Hook ladder}, a ladder with hooks at the end by which it can
be suspended, as from the top of a wall.

{Hook motion} (Steam Engin.), a valve gear which is reversed
by V hooks.

{Hook squid}, any squid which has the arms furnished with
hooks, instead of suckers, as in the genera
{Enoploteuthis} and {Onychteuthis}.

{Hook wrench}, a wrench or spanner, having a hook at the end,
instead of a jaw, for turning a bolthead, nut, or
coupling.