The Collaborative International Dictionary of English v.0.48:

Mineral \Min"er*al\, a.
   1. Of or pertaining to minerals; consisting of a mineral or
      of minerals; as, a mineral substance.
      [1913 Webster]

   2. Impregnated with minerals; as, mineral waters.
      [1913 Webster]

   Mineral acids (Chem.), inorganic acids, as sulphuric,
      nitric, phosphoric, hydrochloric, acids, etc., as
      distinguished from the organic acids.

   Mineral blue, the name usually given to azurite, when
      reduced to an impalpable powder for coloring purposes.

   Mineral candle, a candle made of paraffin.

   Mineral caoutchouc, an elastic mineral pitch, a variety of
      bitumen, resembling caoutchouc in elasticity and softness.
      See Caoutchouc, and Elaterite.

   Mineral chameleon (Chem.) See Chameleon mineral, under
      Chameleon.

   Mineral charcoal. See under Charcoal.

   Mineral cotton. See Mineral wool (below).

   Mineral green, a green carbonate of copper; malachite.

   Mineral kingdom (Nat. Sci.), that one of the three grand
      divisions of nature which embraces all inorganic objects,
      as distinguished from plants or animals.

   Mineral oil. See Naphtha, and Petroleum.

   Mineral paint, a pigment made chiefly of some natural
      mineral substance, as red or yellow iron ocher.

   Mineral patch. See Bitumen, and Asphalt.

   Mineral right, the right of taking minerals from land.

   Mineral salt (Chem.), a salt of a mineral acid.

   Mineral tallow, a familiar name for hatchettite, from its
      fatty or spermaceti-like appearance.

   Mineral water. See under Water.

   Mineral wax. See Ozocerite.

   Mineral wool, a fibrous wool-like material, made by blowing
      a powerful jet of air or steam through melted slag. It is
      a poor conductor of heat.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

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.]
   [1913 Webster]
   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.
      [1913 Webster]

   Note: Wool consists essentially of keratin.
         [1913 Webster]

   2. Short, thick hair, especially when crisped or curled.
      [1913 Webster]

            Wool of bat and tongue of dog.        --Shak.
      [1913 Webster]

   3. (Bot.) A sort of pubescence, or a clothing of dense,
      curling hairs on the surface of certain plants.
      [1913 Webster]

   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.
      [1913 Webster]

WordNet (r) 3.0 (2006):

mineral wool
    n 1: a light fibrous material used as an insulator [syn:
         mineral wool, rock wool]