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3 definitions found
 for Blue gum
From The Collaborative International Dictionary of English v.0.48 :

  Gum \Gum\, n. [OE. gomme, gumme, F. gomme, L. gummi and commis,
     fr. Gr. ?, prob. from an Egyptian form kam?; cf. It.
     gomma.]
     1. A vegetable secretion of many trees or plants that hardens
        when it exudes, but is soluble in water; as, gum arabic;
        gum tragacanth; the gum of the cherry tree. Also, with
        less propriety, exudations that are not soluble in water;
        as, gum copal and gum sandarac, which are really resins.
        [1913 Webster]
  
     2. (Bot.) See Gum tree, below.
        [1913 Webster]
  
     3. A hive made of a section of a hollow gum tree; hence, any
        roughly made hive; also, a vessel or bin made of a hollow
        log. [Southern U. S.]
        [1913 Webster]
  
     4. A rubber overshoe. [Local, U. S.]
        [1913 Webster]
  
     Black gum, Blue gum, British gum, etc. See under
        Black, Blue, etc.
  
     Gum Acaroidea, the resinous gum of the Australian grass
        tree ({Xanlhorrh[oe]a).
  
     Gum animal (Zool.), the galago of West Africa; -- so called
        because it feeds on gums. See Galago.
  
     Gum animi or anim['e]. See Anim['e].
  
     Gum arabic, a gum yielded mostly by several species of
        Acacia (chiefly A. vera and A. Arabica) growing in
        Africa and Southern Asia; -- called also gum acacia.
        East Indian gum arabic comes from a tree of the Orange
        family which bears the elephant apple.
  
     Gum butea, a gum yielded by the Indian plants Butea
        frondosa and B. superba, and used locally in tanning
        and in precipitating indigo.
  
     Gum cistus, a plant of the genus Cistus ({Cistus
        ladaniferus), a species of rock rose.
  
     Gum dragon. See Tragacanth.
  
     Gum elastic, Elastic gum. See Caoutchouc.
  
     Gum elemi. See Elemi.
  
     Gum juniper. See Sandarac.
  
     Gum kino. See under Kino.
  
     Gum lac. See Lac.
  
     Gum Ladanum, a fragrant gum yielded by several Oriental
        species of Cistus or rock rose.
  
     Gum passages, sap receptacles extending through the
        parenchyma of certain plants ({Amygdalace[ae],
        Cactace[ae], etc.), and affording passage for gum.
  
     Gum pot, a varnish maker's utensil for melting gum and
        mixing other ingredients.
  
     Gum resin, the milky juice of a plant solidified by
        exposure to air; one of certain inspissated saps, mixtures
        of, or having properties of, gum and resin; a resin
        containing more or less mucilaginous and gummy matter.
  
     Gum sandarac. See Sandarac.
  
     Gum Senegal, a gum similar to gum arabic, yielded by trees
        ({Acacia Verek and A. Adansoni[aum]) growing in the
        Senegal country, West Africa.
  
     Gum tragacanth. See Tragacanth.
  
     Gum water, a solution of gum, esp. of gum arabic, in water.
        
  
     Gum wood, the wood of any gum tree, esp. the wood of the
        Eucalyptus piperita, of New South Wales.
        [1913 Webster]

From The Collaborative International Dictionary of English v.0.48 :

  Blue \Blue\ (bl[=u]), a. [Compar. Bluer (bl[=u]"[~e]r);
     superl. Bluest.] [OE. bla, blo, blew, blue, livid, black,
     fr. Icel.bl[=a]r livid; akin to Dan. blaa blue, Sw. bl[*a],
     D. blauw, OHG. bl[=a]o, G. blau; but influenced in form by F.
     bleu, from OHG. bl[=a]o.]
     1. Having the color of the clear sky, or a hue resembling it,
        whether lighter or darker; as, the deep, blue sea; as blue
        as a sapphire; blue violets. "The blue firmament."
        --Milton.
        [1913 Webster]
  
     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.
        [1913 Webster]
  
     3. Low in spirits; melancholy; as, to feel blue.
        [1913 Webster]
  
     4. Suited to produce low spirits; gloomy in prospect; as,
        thongs looked blue. [Colloq.]
        [1913 Webster]
  
     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.
        [1913 Webster]
  
     6. Literary; -- applied to women; -- an abbreviation of
        bluestocking. [Colloq.]
        [1913 Webster]
  
              The ladies were very blue and well informed.
                                                    --Thackeray.
        [1913 Webster]
  
     Blue asbestus. See Crocidolite.
  
     Blue black, of, or having, a very dark blue color, almost
        black.
  
     Blue blood. See under Blood.
  
     Blue buck (Zool.), a small South African antelope
        ({Cephalophus pygm[ae]us); also applied to a larger
        species ({[AE]goceras leucoph[ae]us); the blaubok.
  
     Blue cod (Zool.), the buffalo cod.
  
     Blue crab (Zool.), the common edible crab of the Atlantic
        coast of the United States ({Callinectes hastatus).
  
     Blue curls (Bot.), a common plant ({Trichostema
        dichotomum), 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 ({Eucalyptus
        globulus), 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 Blue mould, the blue fungus ({Aspergillus
        glaucus) which grows on cheese. --Brande & C.
  
     Blue Monday,
        (a) a Monday following a Sunday of dissipation, or itself
            given to dissipation (as the Monday before Lent).
        (b) a Monday considered as depressing because it is a
            workday in contrast to the relaxation of the weekend.
            
  
     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 (Zool.), 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.
  
     Big Blue, the International Business Machines corporation.
        [Wall Street slang.] PJC
  
     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.
        [1913 Webster]
  
              For his religion . . .
              'T was Presbyterian, true blue.       --Hudibras.
        [1913 Webster]

From WordNet (r) 3.0 (2006) :

  blue gum
      n 1: tall fast-growing timber tree with leaves containing a
           medicinal oil; young leaves are bluish [syn: blue gum,
           fever tree, Eucalyptus globulus]

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