The Collaborative International Dictionary of English v.0.48:

Wall \Wall\, v. t. [imp. & p. p. Walled; p. pr. & vb. n.
   Walling.]
   1. To inclose with a wall, or as with a wall. "Seven walled
      towns of strength." --Shak.
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            The king of Thebes, Amphion,
            That with his singing walled that city. --Chaucer.
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   2. To defend by walls, or as if by walls; to fortify.
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            The terror of his name that walls us in. --Denham.
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   3. To close or fill with a wall, as a doorway.
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