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3 definitions found
 for Gold dust
From The Collaborative International Dictionary of English v.0.48 :

  Gold \Gold\ (g[=o]ld), n. [AS. gold; akin to D. goud, OS. & G.
     gold, Icel. gull, Sw. & Dan. guld, Goth. gul[thorn], Russ. &
     OSlav. zlato; prob. akin to E. yellow. [root]49, 234. See
     Yellow, and cf. Gild, v. t.]
     [1913 Webster]
     1. (Chem.) A metallic element of atomic number 79,
        constituting the most precious metal used as a common
        commercial medium of exchange. It has a characteristic
        yellow color, is one of the heaviest substances known
        (specific gravity 19.32), is soft, and very malleable and
        ductile. It is quite unalterable by heat (melting point
        1064.4[deg] C), moisture, and most corrosive agents, and
        therefore well suited for its use in coin and jewelry.
        Symbol Au ({Aurum). Atomic weight 196.97.
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     Note: Native gold contains usually eight to ten per cent of
           silver, but often much more. As the amount of silver
           increases, the color becomes whiter and the specific
           gravity lower. Gold is very widely disseminated, as in
           the sands of many rivers, but in very small quantity.
           It usually occurs in quartz veins (gold quartz), in
           slate and metamorphic rocks, or in sand and alluvial
           soil, resulting from the disintegration of such rocks.
           It also occurs associated with other metallic
           substances, as in auriferous pyrites, and is combined
           with tellurium in the minerals petzite, calaverite,
           sylvanite, etc. Pure gold is too soft for ordinary use,
           and is hardened by alloying with silver and copper, the
           latter giving a characteristic reddish tinge. [See
           Carat.] Gold also finds use in gold foil, in the
           pigment purple of Cassius, and in the chloride, which
           is used as a toning agent in photography.
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     2. Money; riches; wealth.
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              For me, the gold of France did not seduce. --Shak.
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     3. A yellow color, like that of the metal; as, a flower
        tipped with gold.
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     4. Figuratively, something precious or pure; as, hearts of
        gold. --Shak.
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     Age of gold. See Golden age, under Golden.
     Dutch gold, Fool's gold, Gold dust, etc. See under
        Dutch, Dust, etc.
     Gold amalgam, a mineral, found in Columbia and California,
        composed of gold and mercury.
     Gold beater, one whose occupation is to beat gold into gold
     Gold beater's skin, the prepared outside membrane of the
        large intestine of the ox, used for separating the leaves
        of metal during the process of gold-beating.
     Gold beetle (Zool.), any small gold-colored beetle of the
        family Chrysomelid[ae]; -- called also golden beetle.
     Gold blocking, printing with gold leaf, as upon a book
        cover, by means of an engraved block. --Knight.
     Gold cloth. See Cloth of gold, under Cloth.
     Gold Coast, a part of the coast of Guinea, in West Africa.
     Gold cradle. (Mining) See Cradle, n., 7.
     Gold diggings, the places, or region, where gold is found
        by digging in sand and gravel from which it is separated
        by washing.
     Gold end, a fragment of broken gold or jewelry.
     Gold-end man.
        (a) A buyer of old gold or jewelry.
        (b) A goldsmith's apprentice.
        (c) An itinerant jeweler. "I know him not: he looks like a
            gold-end man." --B. Jonson.
     Gold fever, a popular mania for gold hunting.
     Gold field, a region in which are deposits of gold.
     Gold finder.
        (a) One who finds gold.
        (b) One who empties privies. [Obs. & Low] --Swift.
     Gold flower, a composite plant with dry and persistent
        yellow radiating involucral scales, the Helichrysum
        St[oe]chas of Southern Europe. There are many South
        African species of the same genus.
     Gold foil, thin sheets of gold, as used by dentists and
        others. See Gold leaf.
     Gold knobs or Gold knoppes (Bot.), buttercups.
     Gold lace, a kind of lace, made of gold thread.
     Gold latten, a thin plate of gold or gilded metal.
     Gold leaf, gold beaten into a film of extreme thinness, and
        used for gilding, etc. It is much thinner than gold foil.
     Gold lode (Mining), a gold vein.
     Gold mine, a place where gold is obtained by mining
        operations, as distinguished from diggings, where it is
        extracted by washing. Cf. Gold diggings (above).
     Gold nugget, a lump of gold as found in gold mining or
        digging; -- called also a pepito.
     Gold paint. See Gold shell.
     Gold pheasant, or Golden pheasant. (Zool.) See under
     Gold plate, a general name for vessels, dishes, cups,
        spoons, etc., made of gold.
     Mosaic gold. See under Mosaic.
        [1913 Webster]

From The Collaborative International Dictionary of English v.0.48 :

  Dust \Dust\ (d[u^]st), n. [AS. dust; cf. LG. dust, D. duist meal
     dust, OD. doest, donst, and G. dunst vapor, OHG. tunist,
     dunist, a blowing, wind, Icel. dust dust, Dan. dyst mill
     dust; perh. akin to L. fumus smoke, E. fume. [root]71.]
     1. Fine, dry particles of earth or other matter, so
        comminuted that they may be raised and wafted by the wind;
        that which is crumbled to minute portions; fine powder;
        as, clouds of dust; bone dust.
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              Dust thou art, and unto dust shalt thou return.
                                                    --Gen. iii.
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              Stop! -- for thy tread is on an empire's dust.
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     2. A single particle of earth or other matter. [R.] "To touch
        a dust of England's ground." --Shak.
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     3. The earth, as the resting place of the dead.
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              For now shall sleep in the dust.      --Job vii. 21.
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     4. The earthy remains of bodies once alive; the remains of
        the human body.
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              And you may carve a shrine about my dust.
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     5. Figuratively, a worthless thing.
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              And by the merit of vile gold, dross, dust. --Shak.
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     6. Figuratively, a low or mean condition.
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              [God] raiseth up the poor out of the dust. --1 Sam.
                                                    ii. 8.
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     7. Gold dust; hence: (Slang) Coined money; cash.
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     Down with the dust, deposit the cash; pay down the money.
        [Slang] "My lord, quoth the king, presently deposit your
        hundred pounds in gold, or else no going hence all the
        days of your life. . . . The Abbot down with his dust, and
        glad he escaped so, returned to Reading." --Fuller.
     Dust+brand+(Bot.),+a+fungous+plant+({Ustilago+Carbo">Dust brand (Bot.), a fungous plant ({Ustilago Carbo); --
        called also smut.
     Gold dust, fine particles of gold, such as are obtained in
        placer mining; -- often used as money, being transferred
        by weight.
     In dust and ashes. See under Ashes.
     To bite the dust. See under Bite, v. t.
     To raise dust, or
     To kick up dust, to make a commotion. [Colloq.]
     To throw dust in one's eyes, to mislead; to deceive.
        [1913 Webster]

From WordNet (r) 3.0 (2006) :

  gold dust
      n 1: the particles and flakes (and sometimes small nuggets) of
           gold obtained in placer mining

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