The Collaborative International Dictionary of English v.0.48:

Weed \Weed\, v. t. [imp. & p. p. Weeded; p. pr. & vb. n.
   Weeding.] [AS. we['o]dian. See 3d Weed.]
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   1. To free from noxious plants; to clear of weeds; as, to
      weed corn or onions; to weed a garden.
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   2. To take away, as noxious plants; to remove, as something
      hurtful; to extirpate; -- commonly used with out; as, to
      weed out inefficiency from an enterprise. "Weed up thyme."
      --Shak.
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            Wise fathers . . . weeding from their children ill
            things.                               --Ascham.
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            Revenge is a kind of wild justice, which the more
            man's nature runs to, the more ought law to weed it
            out.                                  --Bacon.
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   3. To free from anything hurtful or offensive.
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            He weeded the kingdom of such as were devoted to
            Elaiana.                              --Howell.
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   4. (Stock Breeding) To reject as unfit for breeding purposes.
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