2. Pale, without redness or glare, said of a flame; hence, of the color of burning brimstone, betokening
the presence of ghosts or devils; as, the candle burns blue; the air was blue with oaths.
3. Low in spirits; melancholy; as, to feel blue.
4. Suited to produce low spirits; gloomy in prospect; as, thongs looked blue. [Colloq.]
5. Severe or over strict in morals; gloom; as, blue and sour religionists; suiting one who is over strict in
morals; inculcating an impracticable, severe, or gloomy mortality; as, blue laws.
6. Literary; applied to women; an abbreviation of bluestocking. [Colloq.]
The ladies were very blue and well informed. Thackeray. Blue asbestus. See Crocidolite. Blue black, of, or having, a very dark blue color, almost black.
Blue blood. See under Blood. Blue buck (Zoöl.), a small South African antelope (Cephalophus
pygmæus); also applied to a larger species (Ægoceras leucophæus); the blaubok. Blue cod (Zoöl.),
the buffalo cod. Blue crab (Zoöl.), the common edible crab of the Atlantic coast of the United States
Blue curls (Bot.), a common plant resembling pennyroyal, and hence called also bastard pennyroyal.
Blue devils, apparitions supposed to be seen by persons suffering with delirium tremens; hence,
very low spirits. "Can Gumbo shut the hall door upon blue devils, or lay them all in a red sea of claret?"
Thackeray. Blue gage. See under Gage, a plum. Blue gum, an Australian myrtaceous tree
of the loftiest proportions, now cultivated in tropical and warm temperate regions for its timber, and as
a protection against malaria. The essential oil is beginning to be used in medicine. The timber is very
useful. See Eucalyptus. Blue jack, Blue stone, blue vitriol; sulphate of copper. Blue jacket,
a man-of war's man; a sailor wearing a naval uniform. Blue jaundice. See under Jaundice.
Blue laws, a name first used in the eighteenth century to describe certain supposititious laws of extreme
rigor reported to have been enacted in New Haven; hence, any puritanical laws. [U. S.] Blue light, a
composition which burns with a brilliant blue flame; used in pyrotechnics and as a night signal at sea,
and in military operations. Blue mantle (Her.), one of the four pursuivants of the English college
of arms; so called from the color of his official robes. Blue mass, a preparation of mercury from
which is formed the blue pill. McElrath. Blue mold, or mould, the blue fungus (Aspergillus glaucus)
which grows on cheese. Brande & C. Blue Monday, a Monday following a Sunday of dissipation,
or itself given to dissipation Blue ointment (Med.), mercurial ointment. Blue Peter (British
Marine), a blue flag with a white square in the center, used as a signal for sailing, to recall boats, etc.
It is a corruption of blue repeater, one of the British signal flags. Blue pill. (Med.) (a) A pill of
prepared mercury, used as an aperient, etc. (b) Blue mass. Blue ribbon. (a) The ribbon worn by
members of the order of the Garter; hence, a member of that order. (b) Anything the attainment of
which is an object of great ambition; a distinction; a prize. "These [scholarships] were the blue ribbon of
the college." Farrar. (c) The distinctive badge of certain temperance or total abstinence organizations,
as of the Blue ribbon Army. Blue ruin, utter ruin; also, gin. [Eng. Slang] Carlyle. Blue spar
(Min.), azure spar; lazulite. See Lazulite. Blue thrush (Zoöl.), a European and Asiatic thrush (Petrocossyphus
cyaneas). Blue verditer. See Verditer. Blue vitriol (Chem.), sulphate of copper,
a violet blue crystallized salt, used in electric batteries, calico printing, etc. Blue water, the open
ocean. To look blue, to look disheartened or dejected. True blue, genuine and thorough; not
modified, nor mixed; not spurious; specifically, of uncompromising Presbyterianism, blue being the color
adopted by the Covenanters.
For his religion . . . 'T was Presbyterian, true blue. Hudibras. Blue (Blue) n.
1. One of the seven colors into which the rays of light divide themselves, when refracted through a glass
prism; the color of the clear sky, or a color resembling that, whether lighter or darker; a pigment having
such color. Sometimes, poetically, the sky.
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