n. 扳手

[化] 扳手; 紧固扳手; 紧固器

[ noun ]
a hand tool that is used to hold or twist a nut or bolt
<noun.artifact>

spanner \span"ner\ (sp[a^]n"n[~e]r), n.
1. One who, or that which, spans.

2. The lock of a fusee or carbine; also, the fusee or carbine
itself. [Obs.]

3. An iron instrument having a jaw to fit a nut or the head
of a bolt, and used as a lever to turn it with; a wrench;
specifically, a wrench for unscrewing or tightening the
couplings of hose. [Chiefly British usage]

4. pl. A contrivance in some of the earlier steam engines for
moving the valves for the alternate admission and shutting
off of the steam.


Inchworm \Inch"worm`\, n. (Zo["o]l.)
The larva of any geometrid moth. It progresses forward by
first bringing the rear end of the body forward, forming a
loop, then moving the front part of the body; called also
{measuring} worm, {measuringworm}, {spanner}, and {looper}.
See {Geometrid}.