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:

Graining \Grain"ing\, n.
   1. Indentation; roughening; milling, as on edges of coins.
      --Locke.
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   2. A process in dressing leather, by which the skin is
      softened and the grain raised.
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   3. Painting or staining, in imitation of the grain of wood,
      stone, etc.
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   4. (Soap Making) The process of separating soap from spent
      lye, as with salt.
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The Collaborative International Dictionary of English v.0.48:

Graining \Grain"ing\, n. (Zool.)
   A small European fresh-water fish (Leuciscus vulgaris); --
   called also dobule, and dace.
   [1913 Webster]