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2 definitions found
 for Lead tree
From The Collaborative International Dictionary of English v.0.48 :

  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
        (melting point 327.5[deg] C), forms alloys with other
        metals, and is an ingredient of solder and type metal.
        Atomic number 82. Atomic weight, 207.2. Symbol Pb (L.
        Plumbum). It is chiefly obtained from the mineral galena,
        lead sulphide.
        [1913 Webster]
  
     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.
            [1913 Webster]
  
                  I would have the tower two stories, and goodly
                  leads upon the top.               --Bacon
            [1913 Webster]
  
     3. A small cylinder of black lead or graphite, used in
        pencils.
        [1913 Webster]
  
     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 white, 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
        ({Amorpha 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 the lead, or To 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.
        [1913 Webster]

From WordNet (r) 3.0 (2006) :

  lead tree
      n 1: low scrubby tree of tropical and subtropical North America
           having white flowers tinged with yellow resembling mimosa
           and long flattened pods [syn: lead tree, white popinac,
           Leucaena glauca, Leucaena leucocephala]

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