The Collaborative International Dictionary of English v.0.48:

Debar \De*bar"\, v. t. [imp. & p. p. Debarred; p. pr. & vb. n.
   Debarring.] [Pref. de- + bar.]
   To cut off from entrance, as if by a bar or barrier; to
   preclude; to hinder from approach, entry, or enjoyment; to
   shut out or exclude; to deny or refuse; -- with from, and
   sometimes with of.
   [1913 Webster]

         Yet not so strictly hath our Lord imposed
         Labor, as to debar us when we need
         Refreshment.                             --Milton.
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         Their wages were so low as to debar them, not only from
         the comforts but from the common decencies of civilized
         life.                                    --Buckle.
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