slag wool

Slag \Slag\ (sl[a^]g), n. [Sw. slagg, or LG. slacke, whence G.
   schlacke; originally, perhaps, the splinters struck off from
   the metal by hammering. See {Slay}, v. t.]
   1. The dross, or recrement, of a metal; also, vitrified
      cinders.
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   2. The scoria of a volcano.
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   3. (Metal.) A product of smelting, containing, mostly as
      silicates, the substances not sought to be produced as
      matte or metal, and having a lower specific gravity than
      the latter; -- called also, esp. in iron smelting,
      {cinder}. The slag of iron blast furnaces is essentially
      silicate of calcium, magnesium, and aluminium; that of
      lead and copper smelting furnaces contains iron.
      [Webster 1913 Suppl.]

   {Slag furnace}, or {Slag hearth} (Metal.), a furnace, or
      hearth, for extracting lead from slags or poor ore.

   {Slag wool}, mineral wool. See under {Mineral}.
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Wool \Wool\ (w[oo^]l), n. [OE. wolle, wulle, AS. wull; akin to
   D. wol, OHG. wolla, G. wolle, Icel. & Sw. ull, Dan. uld,
   Goth, wulla, Lith. vilna, Russ. volna, L. vellus, Skr.
   [=u]r[.n][=a] wool, v[.r] to cover. [root]146, 287. Cf.
   {Flannel}, {Velvet}.]
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   1. The soft and curled, or crisped, species of hair which
      grows on sheep and some other animals, and which in
      fineness sometimes approaches to fur; -- chiefly applied
      to the fleecy coat of the sheep, which constitutes a most
      essential material of clothing in all cold and temperate
      climates.
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   Note: Wool consists essentially of keratin.
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   2. Short, thick hair, especially when crisped or curled.
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            Wool of bat and tongue of dog.        --Shak.
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   3. (Bot.) A sort of pubescence, or a clothing of dense,
      curling hairs on the surface of certain plants.
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   {Dead pulled wool}, wool pulled from a carcass.

   {Mineral wool}. See under {Mineral}.

   {Philosopher's wool}. (Chem.) See {Zinc oxide}, under {Zinc}.
      

   {Pulled wool}, wool pulled from a pelt, or undressed hide.

   {Slag wool}. Same as {Mineral wool}, under {Mineral}.

   {Wool ball}, a ball or mass of wool.

   {Wool burler}, one who removes little burs, knots, or
      extraneous matter, from wool, or the surface of woolen
      cloth.

   {Wool comber}.
      (a) One whose occupation is to comb wool.
      (b) A machine for combing wool.

   {Wool grass} (Bot.), a kind of bulrush ({Scirpus Eriophorum})
      with numerous clustered woolly spikes.

   {Wool scribbler}. See {Woolen scribbler}, under {Woolen}, a.
      

   {Wool sorter's disease} (Med.), a disease, resembling
      malignant pustule, occurring among those who handle the
      wool of goats and sheep.

   {Wool staple}, a city or town where wool used to be brought
      to the king's staple for sale. [Eng.]

   {Wool stapler}.
      (a) One who deals in wool.
      (b) One who sorts wool according to its staple, or its
          adaptation to different manufacturing purposes.

   {Wool winder}, a person employed to wind, or make up, wool
      into bundles to be packed for sale.
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