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2 definitions found

From: Webster's Revised Unabridged Dictionary (1913)

 Blanch v. t. [imp. & p. p. Blanched p. pr. & vb. n. Blanching.]
 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.

From: WordNet (r) 2.0

      adj 1: ash-colored or anemic looking from illness or emotion; "a
             face turned ashen"; "the invalid's blanched cheeks";
             "tried to speak with bloodless lips"; "a face livid
             with shock"; "lips...livid with the hue of death"-
             Mary W. Shelley; "lips white with terror"; "a face
             white with rage" [syn: ashen, bloodless, livid,
      2: (especially of plants) developed without chlorophyll by
         being deprived of light; "etiolated celery" [syn: etiolate,