The Collaborative International Dictionary of English v.0.48:

Case \Case\, v. t. [imp. & p. p. Cased; p. pr. & vb. n.
   Casing.]
   1. To cover or protect with, or as with, a case; to inclose.
      [1913 Webster]

            The man who, cased in steel, had passed whole days
            and nights in the saddle.             --Prescott.
      [1913 Webster]

   2. To strip the skin from; as, to case a box. [Obs.]
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

cased \cased\ adj.
   1. covered or protected with or as if with a case; as,
      knights cased in steel.

   Syn: encased, incased.
        [WordNet 1.5]

   2. same as bound; -- of books.

   Syn: covered.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

cased
    adj 1: covered or protected with or as if with a case; "knights
           cased in steel"; "products encased in leatherette" [syn:
           cased, encased, incased]
    2: enclosed in a case