Source : Webster's Revised Unabridged Dictionary (1913)

Ingrain \In"grain`\ (?; 277), a. [Pref. in- in + grain kermes.
   See {Engrain}, {Grain}.]
   1. Dyed with grain, or kermes. [Obs.]

   2. Dyed before manufacture, -- said of the material of a
      textile fabric; hence, in general, thoroughly inwrought;
      forming an essential part of the substance.

   {Ingrain carpet}, a double or two-ply carpet.

   {Triple ingrain carpet}, a three-ply carpet.

Ingrain \In"grain`\, n.
   An ingrain fabric, as a carpet.

Ingrain \In"grain`\, v. t. [imp. & p. p. {Ingrained}; p. pr. &
   vb. n. {Ingraining}.] [Written also engrain.]
   1. To dye with or in grain or kermes.

   2. To dye in the grain, or before manufacture.

   3. To work into the natural texture or into the mental or
      moral constitution of; to stain; to saturate; to imbue; to
      infix deeply.

            Our fields ingrained with blood.      --Daniel.

            Cruelty and jealousy seem to be ingrained in a man
            who has these vices at all.           --Helps.

Source : WordNet®

ingrain
     v 1: thoroughly work in; "His hands were grained with dirt" [syn:
           {grain}]
     2: produce or try to produce a vivid impression of; "Mother
        tried to ingrain respect for our elders in us" [syn: {impress},
         {instill}]