资料来源 : Webster's Revised Unabridged Dictionary (1913)

Lead \Lead\ (l[e^]d), n. [OE. led, leed, lead, AS. le['a]d; akin
   to D. lood, MHG. l[=o]t, G. loth plummet, sounding lead,
   small weight, Sw. & Dan. lod. [root]123]
   1. (Chem.) One of the elements, a heavy, pliable, inelastic
      metal, having a bright, bluish color, but easily
      tarnished. It is both malleable and ductile, though with
      little tenacity, and is used for tubes, sheets, bullets,
      etc. Its specific gravity is 11.37. It is easily fusible,
      forms alloys with other metals, and is an ingredient of
      solder and type metal. Atomic weight, 206.4. Symbol Pb (L.
      Plumbum). It is chiefly obtained from the mineral galena,
      lead sulphide.

   2. An article made of lead or an alloy of lead; as:
      (a) A plummet or mass of lead, used in sounding at sea.
      (b) (Print.) A thin strip of type metal, used to separate
          lines of type in printing.
      (c) Sheets or plates of lead used as a covering for roofs;
          hence, pl., a roof covered with lead sheets or terne
          plates.

                I would have the tower two stories, and goodly
                leads upon the top.               --Bacon

   3. A small cylinder of black lead or plumbago, used in
      pencils.

   {Black lead}, graphite or plumbago; -- so called from its
      leadlike appearance and streak. [Colloq.]

   {Coasting lead}, a sounding lead intermediate in weight
      between a hand lead and deep-sea lead.

   {Deep-sea lead}, the heaviest of sounding leads, used in
      water exceeding a hundred fathoms in depth. --Ham. Nav.
      Encyc.

   {Hand lead}, a small lead use for sounding in shallow water.
      

   {Krems lead}, {Kremnitz lead} [so called from Krems or
      Kremnitz, in Austria], a pure variety of white lead,
      formed into tablets, and called also {Krems, or Kremnitz,
      white}, and {Vienna white}.

   {Lead arming}, tallow put in the hollow of a sounding lead.
      See {To arm the lead} (below).

   {Lead colic}. See under {Colic}.

   {Lead color}, a deep bluish gray color, like tarnished lead.
      

   {Lead glance}. (Min.) Same as {Galena}.

   {Lead line}
      (a) (Med.) A dark line along the gums produced by a
          deposit of metallic lead, due to lead poisoning.
      (b) (Naut.) A sounding line.

   {Lead mill}, a leaden polishing wheel, used by lapidaries.

   {Lead ocher} (Min.), a massive sulphur-yellow oxide of lead.
      Same as {Massicot}.

   {Lead pencil}, a pencil of which the marking material is
      graphite (black lead).

   {Lead plant} (Bot.), a low leguminous plant, genus {Amorpha}
      ({A. canescens}), found in the Northwestern United States,
      where its presence is supposed to indicate lead ore.
      --Gray.

   {Lead tree}.
      (a) (Bot.) A West Indian name for the tropical, leguminous
          tree, {Leuc[ae]na glauca}; -- probably so called from
          the glaucous color of the foliage.
      (b) (Chem.) Lead crystallized in arborescent forms from a
          solution of some lead salt, as by suspending a strip
          of zinc in lead acetate.

   {Mock lead}, a miner's term for blende.

   {Red lead}, a scarlet, crystalline, granular powder,
      consisting of minium when pure, but commonly containing
      several of the oxides of lead. It is used as a paint or
      cement and also as an ingredient of flint glass.

   {Red lead ore} (Min.), crocoite.

   {Sugar of lead}, acetate of lead.

   {To arm the lead}, to fill the hollow in the bottom of a
      sounding lead with tallow in order to discover the nature
      of the bottom by the substances adhering. --Ham. Nav.
      Encyc.

   {To} {cast, or heave}, {the lead}, to cast the sounding lead
      for ascertaining the depth of water.

   {White lead}, hydrated carbonate of lead, obtained as a
      white, amorphous powder, and much used as an ingredient of
      white paint.

Sugar \Sug"ar\, n. [OE. sugre, F. sucre (cf. It. zucchero, Sp.
   az['u]car), fr. Ar. sukkar, assukkar, fr. Skr. [,c]arkar[=a]
   sugar, gravel; cf. Per. shakar. Cf. {Saccharine}, {Sucrose}.]
   1. A sweet white (or brownish yellow) crystalline substance,
      of a sandy or granular consistency, obtained by
      crystallizing the evaporated juice of certain plants, as
      the sugar cane, sorghum, beet root, sugar maple, etc. It
      is used for seasoning and preserving many kinds of food
      and drink. Ordinary sugar is essentially sucrose. See the
      Note below.

   Note: The term sugar includes several commercial grades, as
         the white or refined, granulated, loaf or lump, and the
         raw brown or muscovado. In a more general sense, it
         includes several distinct chemical compounds, as the
         glucoses, or grape sugars (including glucose proper,
         dextrose, and levulose), and the sucroses, or true
         sugars (as cane sugar). All sugars are carbohydrates.
         See {Carbohydrate}. The glucoses, or grape sugars, are
         ketone alcohols of the formula {C6H12O6}, and they turn
         the plane of polarization to the right or the left.
         They are produced from the amyloses and sucroses, as by
         the action of heat and acids of ferments, and are
         themselves decomposed by fermentation into alcohol and
         carbon dioxide. The only sugar (called acrose) as yet
         produced artificially belongs to this class. The
         sucroses, or cane sugars, are doubled glucose
         anhydrides of the formula {C12H22O11}. They are usually
         not fermentable as such (cf. {Sucrose}), and they act
         on polarized light.

   2. By extension, anything resembling sugar in taste or
      appearance; as, sugar of lead (lead acetate), a poisonous
      white crystalline substance having a sweet taste.

   3. Compliment or flattery used to disguise or render
      acceptable something obnoxious; honeyed or soothing words.
      [Colloq.]

   {Acorn sugar}. See {Quercite}.

   {Cane sugar}, sugar made from the sugar cane; sucrose, or an
      isomeric sugar. See {Sucrose}.

   {Diabetes}, or {Diabetic}, {sugar} (Med. Chem.), a variety of
      sugar (probably grape sugar or dextrose) excreted in the
      urine in diabetes mellitus.

   {Fruit sugar}. See under {Fruit}, and {Fructose}.

   {Grape sugar}, a sirupy or white crystalline sugar (dextrose
      or glucose) found as a characteristic ingredient of ripe
      grapes, and also produced from many other sources. See
      {Dextrose}, and {Glucose}.

   {Invert sugar}. See under {Invert}.

   {Malt sugar}, a variety of sugar isomeric with sucrose, found
      in malt. See {Maltose}.

   {Manna sugar}, a substance found in manna, resembling, but
      distinct from, the sugars. See {Mannite}.

   {Milk sugar}, a variety of sugar characteristic of fresh
      milk, and isomeric with sucrose. See {Lactose}.

   {Muscle sugar}, a sweet white crystalline substance isomeric
      with, and formerly regarded to, the glucoses. It is found
      in the tissue of muscle, the heart, liver, etc. Called
      also {heart sugar}. See {Inosite}.

   {Pine sugar}. See {Pinite}.

   {Starch sugar} (Com. Chem.), a variety of dextrose made by
      the action of heat and acids on starch from corn,
      potatoes, etc.; -- called also {potato sugar}, {corn
      sugar}, and, inaccurately, {invert sugar}. See {Dextrose},
      and {Glucose}.

   {Sugar barek}, one who refines sugar.

   {Sugar beet} (Bot.), a variety of beet ({Beta vulgaris}) with
      very large white roots, extensively grown, esp. in Europe,
      for the sugar obtained from them.

   {Sugar berry} (Bot.), the hackberry.

   {Sugar bird} (Zo["o]l.), any one of several species of small
      South American singing birds of the genera {C[oe]reba},
      {Dacnis}, and allied genera belonging to the family
      {C[oe]rebid[ae]}. They are allied to the honey eaters.

   {Sugar bush}. See {Sugar orchard}.

   {Sugar camp}, a place in or near a sugar orchard, where maple
      sugar is made.

   {Sugar candian}, sugar candy. [Obs.]

   {Sugar candy}, sugar clarified and concreted or crystallized;
      candy made from sugar.

   {Sugar cane} (Bot.), a tall perennial grass ({Saccharum
      officinarium}), with thick short-jointed stems. It has
      been cultivated for ages as the principal source of sugar.
      

   {Sugar loaf}.
      (a) A loaf or mass of refined sugar, usually in the form
          of a truncated cone.
      (b) A hat shaped like a sugar loaf.

                Why, do not or know you, grannam, and that sugar
                loaf?                             --J. Webster.

   {Sugar maple} (Bot.), the rock maple ({Acer saccharinum}).
      See {Maple}.

   {Sugar mill}, a machine for pressing out the juice of the
      sugar cane, usually consisting of three or more rollers,
      between which the cane is passed.

   {Sugar mite}. (Zo["o]l.)
      (a) A small mite ({Tyroglyphus sacchari}), often found in
          great numbers in unrefined sugar.
      (b) The lepisma.

   {Sugar of lead}. See {Sugar}, 2, above.

   {Sugar of milk}. See under {Milk}.

   {Sugar orchard}, a collection of maple trees selected and
      preserved for purpose of obtaining sugar from them; --
      called also, sometimes, {sugar bush}. [U.S.] --Bartlett.

   {Sugar pine} (Bot.), an immense coniferous tree ({Pinus
      Lambertiana}) of California and Oregon, furnishing a soft
      and easily worked timber. The resinous exudation from the
      stumps, etc., has a sweetish taste, and has been used as a
      substitute for sugar.

   {Sugar squirrel} (Zo["o]l.), an Australian flying phalanger
      ({Belideus sciureus}), having a long bushy tail and a
      large parachute. It resembles a flying squirrel. See
      Illust. under {Phlanger}.

   {Sugar tongs}, small tongs, as of silver, used at table for
      taking lumps of sugar from a sugar bowl.

   {Sugar tree}. (Bot.) See {Sugar maple}, above.

资料来源 : WordNet®

sugar of lead
     n : a poisonous white solid (Pb[CH3CO]2) used in dyeing cotton
         and in making enamels and varnishes [syn: {lead acetate}]