Source : Webster's Revised Unabridged Dictionary (1913)

Blanch \Blanch\, v. t. [imp. & p. p. {Blanched}; p. pr. & vb. n.
   {Blanching}.] [OE. blanchen, blaunchen, F. blanchir, fr.
   blanc white. See {Blank}, a.]
   1. To take the color out of, and make white; to bleach; as,
      to blanch linen; age has blanched his hair.

   2. (Gardening) To bleach by excluding the light, as the
      stalks or leaves of plants, by earthing them up or tying
      them together.

   3. (Confectionery & Cookery)
      (a) To make white by removing the skin of, as by scalding;
          as, to blanch almonds.
      (b) To whiten, as the surface of meat, by plunging into
          boiling water and afterwards into cold, so as to
          harden the surface and retain the juices.

   4. To give a white luster to (silver, before stamping, in the
      process of coining.).

   5. To cover (sheet iron) with a coating of tin.

   6. Fig.: To whiten; to give a favorable appearance to; to
      whitewash; to palliate.

            Blanch over the blackest and most absurd things.
                                                  --Tillotson.

   Syn: To {Blanch}, {Whiten}.

   Usage: To whiten is the generic term, denoting, to render
          white; as, to whiten the walls of a room. Usually
          (though not of necessity) this is supposed to be done
          by placing some white coloring matter in or upon the
          surface of the object in question. To blanch is to
          whiten by the removal of coloring matter; as, to
          blanch linen. So the cheek is blanched by fear, i. e.,
          by the withdrawal of the blood, which leaves it white.

Blanch \Blanch\, v. i.
   To use evasion. [Obs.]

         Books will speak plain, when counselors blanch.
                                                  --Bacon.

Blanch \Blanch\, n. (Mining)
   Ore, not in masses, but mixed with other minerals.

Blanch \Blanch\, v. i.
   To grow or become white; as, his cheek blanched with fear;
   the rose blanches in the sun.

         [Bones] blanching on the grass.          --Tennyson.

Blanch \Blanch\, v. t. [See {Blench}.]
   1. To avoid, as from fear; to evade; to leave unnoticed.
      [Obs.]

            Ifs and ands to qualify the words of treason,
            whereby every man might express his malice and
            blanch his danger.                    --Bacon.

            I suppose you will not blanch Paris in your way.
                                                  --Reliq. Wot.

   2. To cause to turn aside or back; as, to blanch a deer.

Source : WordNet®

blanch
     v 1: turn pale, as if in fear [syn: {pale}, {blench}]
     2: cook (vegetables) briefly; "Parboil the beans before
        freezing them" [syn: {parboil}]