Source : Webster's Revised Unabridged Dictionary (1913)

Sheathe \Sheathe\, v. t. [imp. & p. p. {Sheathed}; p. pr. & vb.
   n. {Sheating}.] [Written also sheath.]
   1. To put into a sheath, case, or scabbard; to inclose or
      cover with, or as with, a sheath or case.

            The leopard . . . keeps the claws of his fore feet
            turned up from the ground, and sheathed in the skin
            of his toes.                          --Grew.

            'T is in my breast she sheathes her dagger now.
                                                  --Dryden.

   2. To fit or furnish, as with a sheath. --Shak.

   3. To case or cover with something which protects, as thin
      boards, sheets of metal, and the like; as, to sheathe a
      ship with copper.

   4. To obtund or blunt, as acrimonious substances, or sharp
      particles. [R.] --Arbuthnot.

   {To sheathe the sword}, to make peace.

Sheathed \Sheathed\, a.
   1. Povided with, or inclosed in, sheath.

   2. (Bot.) Invested by a sheath, or cylindrical membranaceous
      tube, which is the base of the leaf, as the stalk or culm
      in grasses; vaginate.

Source : WordNet®

sheathed
     adj : enclosed in a protective covering; sometimes used in
           combination; "his sheathed sword"; "the cat's sheathed
           claws"; "a ship's bottom sheathed in copper";
           "copper-sheathed" [ant: {unsheathed}]