The Collaborative International Dictionary of English v.0.48:

Glass \Glass\, v. t. [imp. & p. p. Glassed; p. pr. & vb. n.
   Glassing.]
   1. To reflect, as in a mirror; to mirror; -- used
      reflexively.
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            Happy to glass themselves in such a mirror.
                                                  --Motley.
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            Where the Almighty's form glasses itself in
            tempests.                             --Byron.
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   2. To case in glass. [R.] --Shak.
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   3. To cover or furnish with glass; to glaze. --Boyle.
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   4. To smooth or polish anything, as leater, by rubbing it
      with a glass burnisher.
      [1913 Webster] glassblower