The Collaborative International Dictionary of English v.0.48:

Grain \Grain\, v. t. [imp. & p. p. Grained (gr[=a]nd); p. pr.
   & vb. n. Graining.]
   1. To paint in imitation of the grain of wood, marble, etc.
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   2. To form (powder, sugar, etc.) into grains.
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   3. To take the hair off (skins); to soften and raise the
      grain of (leather, etc.).
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The Collaborative International Dictionary of English v.0.48:

Grained \Grained\ (gr[=a]nd), a.
   1. Having a grain; divided into small particles or grains;
      showing the grain; hence, rough.
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   2. Dyed in grain; ingrained.
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            Persons lightly dipped, not grained, in generous
            honesty, are but pale in goodness.    --Sir T.
                                                  Browne.
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   3. Painted or stained in imitation of the grain of wood,
      marble, etc.
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   4. (Bot.) Having tubercles or grainlike processes, as the
      petals or sepals of some flowers.
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