What is "to sheathe the sword"

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.