The Collaborative International Dictionary of English v.0.48:

Impale \Im*pale"\, v. t. [imp. & p. p. Impaled; p. pr. & vb.
   n. Impaling.] [See 2d Empale.]
   1. To pierce with a pale; to put to death by fixing on a
      sharp stake. See Empale.
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            Then with what life remains, impaled, and left
            To writhe at leisure round the bloody stake.
                                                  --Addison.
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   2. To inclose, as with pales or stakes; to surround.
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            Impale him with your weapons round about. --Shak.
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            Impenetrable, impaled with circling fire. --Milton.
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   3. (Her.) To join, as two coats of arms on one shield,
      palewise; hence, to join in honorable mention.
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            Ordered the admission of St. Patrick to the same to
            be matched and impaled with the blessed Virgin in
            the honor thereof.                    --Fuller.
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