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.
      [1913 Webster]

   2. To dye in the grain, or before manufacture.
      [1913 Webster]

   3. To work into the natural texture or into the mental or
      moral constitution of; to stain; to saturate; to imbue; to
      infix deeply.
      [1913 Webster]

            Our fields ingrained with blood.      --Daniel.
      [1913 Webster]

            Cruelty and jealousy seem to be ingrained in a man
            who has these vices at all.           --Helps.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

ingraining \ingraining\ n.
   teaching or impressing upon the mind by frequent instruction
   or repetition.

   Syn: inculcation, instilling.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

ingraining
    n 1: teaching or impressing upon the mind by frequent
         instruction or repetition [syn: inculcation,
         ingraining, instilling]