halotrichite
铁明矾
铁明矾
Halotrichite \
Hal *
o *
tri "
chite \ (
h [
a ^]
l *[-
o ]*
tr [
imac ]"
k [
imac ]
t ),
n . [
Gr . "
a `
ls sea qri `
x ,
tricho `
s ,
hair .] (
Min .)
An iron alum occurring in silky fibrous aggregates of a yellowish white color .
[
1913 Webster ]
Feather \
Feath "
er \ (
f [
e ^][
th ]"[~
e ]
r ),
n . [
OE .
fether ,
AS .
fe [
eth ]
er ;
akin to D .
veder ,
OHG .
fedara ,
G .
feder ,
Icel .
fj ["
o ][
eth ]
r ,
Sw .
fj [
aum ]
der ,
Dan .
fj [
ae ]
der ,
Gr .
ptero `
n wing ,
feather ,
pe `
tesqai to fly ,
Skr .
pattra wing ,
feather ,
pat to fly ,
and prob .
to L .
penna feather ,
wing . [
root ]
76 ,
248 .
Cf . {
Pen }
a feather .]
1 .
One of the peculiar dermal appendages ,
of several kinds ,
belonging to birds ,
as contour feathers ,
quills ,
and down .
[
1913 Webster ]
Note :
An ordinary feather consists of the quill or hollow basal part of the stem ;
the shaft or rachis ,
forming the upper ,
solid part of the stem ;
the vanes or webs ,
implanted on the rachis and consisting of a series of slender lamin [
ae ]
or barbs ,
which usually bear barbules ,
which in turn usually bear barbicels and interlocking hooks by which they are fastened together .
See {
Down }, {
Quill }, {
Plumage }.
2 .
Kind ;
nature ;
species ; --
from the proverbial phrase ,
"
Birds of a feather ,"
that is ,
of the same species . [
R .]
[
1913 Webster ]
I am not of that feather to shake off My friend when he must need me . --
Shak .
[
1913 Webster ]
3 .
The fringe of long hair on the legs of the setter and some other dogs .
[
1913 Webster ]
4 .
A tuft of peculiar ,
long ,
frizzly hair on a horse .
[
1913 Webster ]
5 .
One of the fins or wings on the shaft of an arrow .
[
1913 Webster ]
6 . (
Mach . &
Carp .)
A longitudinal strip projecting as a fin from an object ,
to strengthen it ,
or to enter a channel in another object and thereby prevent displacement sidwise but permit motion lengthwise ;
a spline .
[
1913 Webster ]
7 .
A thin wedge driven between the two semicylindrical parts of a divided plug in a hole bored in a stone ,
to rend the stone . --
Knight .
[
1913 Webster ]
8 .
The angular adjustment of an oar or paddle -
wheel float ,
with reference to a horizontal axis ,
as it leaves or enters the water .
[
1913 Webster ]
Note :
Feather is used adjectively or in combination ,
meaning composed of ,
or resembling ,
a feather or feathers ;
as ,
feather fan ,
feather -
heeled ,
feather duster .
[
1913 Webster ]
{
Feather alum } (
Min .),
a hydrous sulphate of alumina ,
resulting from volcanic action ,
and from the decomposition of iron pyrites ; --
called also {
halotrichite }. --
Ure .
{
Feather bed },
a bed filled with feathers .
{
Feather driver },
one who prepares feathers by beating .
{
Feather duster },
a dusting brush of feathers .
{
Feather flower },
an artifical flower made of feathers ,
for ladies '
headdresses ,
and other ornamental purposes .
{
Feather grass } (
Bot .),
a kind of grass ({
Stipa pennata })
which has a long feathery awn rising from one of the chaffy scales which inclose the grain .
{
Feather maker },
one who makes plumes ,
etc .,
of feathers ,
real or artificial .
{
Feather ore } (
Min .),
a sulphide of antimony and lead ,
sometimes found in capillary forms and like a cobweb ,
but also massive .
It is a variety of Jamesonite .
{
Feather shot },
or {
Feathered shot } (
Metal .),
copper granulated by pouring into cold water . --
Raymond .
{
Feather spray } (
Naut .),
the spray thrown up ,
like pairs of feathers ,
by the cutwater of a fast -
moving vessel .
{
Feather star }. (
Zool .)
See {
Comatula }.
{
Feather weight }. (
Racing )
(
a )
Scrupulously exact weight ,
so that a feather would turn the scale ,
when a jockey is weighed or weighted .
(
b )
The lightest weight that can be put on the back of a horse in racing . --
Youatt .
(
c )
In wrestling ,
boxing ,
etc .,
a term applied to the lightest of the classes into which contestants are divided ; --
in contradistinction to {
light weight },
{
middle weight },
and {
heavy weight }.
{
A feather in the cap }
an honour ,
trophy ,
or mark of distinction . [
Colloq .]
{
To be in full feather },
to be in full dress or in one '
s best clothes . [
Collog .]
{
To be in high feather },
to be in high spirits . [
Collog .]
{
To cut a feather }.
(
a ) (
Naut .)
To make the water foam in moving ;
in allusion to the ripple which a ship throws off from her bows .
(
b )
To make one '
s self conspicuous . [
Colloq .]
{
To show the white feather },
to betray cowardice , --
a white feather in the tail of a cock being considered an indication that he is not of the true game breed .
[
1913 Webster ]
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