The Collaborative International Dictionary of English v.0.48:

Ingrain \In"grain`\, n.
   An ingrain fabric, as a carpet.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Ingrain \In"grain`\, v. t. [imp. & p. p. Ingrained; p. pr. &
   vb. n. Ingraining.] [Written also engrain.]
   [1913 Webster]
   1. To dye with or in grain or kermes.
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   2. To dye in the grain, or before manufacture.
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   3. To work into the natural texture or into the mental or
      moral constitution of; to stain; to saturate; to imbue; to
      infix deeply.
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            Our fields ingrained with blood.      --Daniel.
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            Cruelty and jealousy seem to be ingrained in a man
            who has these vices at all.           --Helps.
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The Collaborative International Dictionary of English v.0.48:

Ingrain \In"grain`\ (?; 277), a. [Pref. in- in + grain kermes.
   See Engrain, Grain.]
   [1913 Webster]
   1. Dyed with grain, or kermes. [Obs.]
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   2. Dyed before manufacture, -- said of the material of a
      textile fabric; hence, in general, thoroughly inwrought;
      forming an essential part of the substance.
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   Ingrain carpet, a double or two-ply carpet.

   Triple ingrain carpet, a three-ply carpet.
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WordNet (r) 3.0 (2006):

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