Source : Webster's Revised Unabridged Dictionary (1913)

Grain \Grain\, v. t. [imp. & p. p. {Grained}; p. pr. & vb. n.
   {Graining.}]
   1. To paint in imitation of the grain of wood, marble, etc.

   2. To form (powder, sugar, etc.) into grains.

   3. To take the hair off (skins); to soften and raise the
      grain of (leather, etc.).

Grained \Grained\, a.
   1. Having a grain; divided into small particles or grains;
      showing the grain; hence, rough.

   2. Dyed in grain; ingrained.

            Persons lightly dipped, not grained, in generous
            honesty, are but pale in goodness.    --Sir T.
                                                  Browne.

   3. Painted or stained in imitation of the grain of wood,
      marble, etc.

   4. (Bot.) Having tubercles or grainlike processes, as the
      petals or sepals of some flowers.