The Collaborative International Dictionary of English v.0.48:

Group \Group\, v. t. [imp. & p. p. Grouped; p. pr. & vb. n.
   Grouping.] [Cf. F. grouper. See Group, n.]
   To form a group of; to arrange or combine in a group or in
   groups, often with reference to mutual relation and the best
   effect; to form an assemblage of.
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         The difficulty lies in drawing and disposing, or, as
         the painters term it, in grouping such a multitude of
         different objects.                       --Prior.
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   Grouped columns (Arch.), three or more columns placed upon
      the same pedestal.
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