ferrule
n . 金属手杖等的,金属环,套圈
vt . 装以金属铁
金属手杖等的,金属环,套圈装以金属铁
ferrule 套接管
ferrule n 1 :
a metal cap or band placed on a wooden pole to prevent splitting [
synonym : {
ferrule }, {
collet }]
Thimble \
Thim "
ble \,
n . [
OE .
thimbil ,
AS . ??
mel ,
fr . ??
ma a thumb . [
root ]
56 .
See {
Thumb }.]
1 .
A kind of cap or cover ,
or sometimes a broad ring ,
for the end of the finger ,
used in sewing to protect the finger when pushing the needle through the material .
It is usually made of metal ,
and has upon the outer surface numerous small pits to catch the head of the needle .
[
1913 Webster ]
2 . (
Mech .)
Any thimble -
shaped appendage or fixure .
Specifically :
(
a )
A tubular piece ,
generally a strut ,
through which a bolt or pin passes .
(
b )
A fixed or movable ring ,
tube ,
or lining placed in a hole .
(
c )
A tubular cone for expanding a flue ; --
called {
ferrule }
in England .
[
1913 Webster ]
3 . (
Naut .)
A ring of thin metal formed with a grooved circumference so as to fit within an eye -
spice ,
or the like ,
and protect it from chafing .
[
1913 Webster ]
Ferrule \
Fer "
rule \ (
f [
e ^]
r "
r [
i ^]
l or f [
e ^]
r "
r [.
u ]
l ;
277 ),
n .
[
Formerly verrel ,
F .
virole ,
fr .
L .
viriola little bracelet ,
dim .
of viriae ,
pl .,
bracelets ;
prob .
akin to viere to twist ,
weave ,
and E .
withe .
The spelling with f is due to confusion with L .
ferrum iron .] [
Sometimes spelled {
ferule }.]
1 .
A ring or cap of metal put round a cane ,
tool ,
handle ,
or other similar object ,
to strengthen it ,
or prevent splitting and wearing .
[
1913 Webster ]
2 . (
Machinery )
Any of various circular or cylindrical metal objects used at joints in a tube ,
pipe ,
or rod ,
especially to assist making a tight seal at a joint .
[
PJC ]
3 .
Hence : (
Steam Boilers )
A bushing for expanding the end of a flue to fasten it tightly in the tube plate ,
or for partly filling up its mouth .
[
1913 Webster ]
4 .
Hence : (
Chemistry )
A bushing used at the joints of metal tubing in HPLC equipment to make a tight seal .
[
PJC ]
5 . (
Fishing )
One of several small rings at the top of a casting rod which holds the fishing line . --
RHUD [
PJC ]
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