Source : Webster's Revised Unabridged Dictionary (1913)

Arm \Arm\, v. t. [imp. & p. p. {Armed}; p. pr. & vb. n.
   {Arming}.] [OE. armen, F. armer, fr. L. armare, fr. arma,
   pl., arms. See {arms}.]
   1. To take by the arm; to take up in one's arms. [Obs.]

            And make him with our pikes and partisans A grave:
            come, arm him.                        --Shak.

            Arm your prize; I know you will not lose him. --Two
                                                  N. Kins.

   2. To furnish with arms or limbs. [R.]

            His shoulders broad and strong, Armed long and
            round.                                --Beau. & Fl.

   3. To furnish or equip with weapons of offense or defense;
      as, to arm soldiers; to arm the country.

            Abram . . . armed his trained servants. --Gen. xiv.
                                                  14.

   4. To cover or furnish with a plate, or with whatever will
      add strength, force, security, or efficiency; as, to arm
      the hit of a sword; to arm a hook in angling.

   5. Fig.: To furnish with means of defense; to prepare for
      resistance; to fortify, in a moral sense.

            Arm yourselves . . . with the same mind. --1 Pet.
                                                  iv. 1.

   {To arm a magnet}, to fit it with an armature.

Arming \Arm"ing\, n.
   1. The act of furnishing with, or taking, arms.

            The arming was now universal.         --Macaulay.

   2. (Naut.) A piece of tallow placed in a cavity at the lower
      end of a sounding lead, to bring up the sand, shells,
      etc., of the sea bottom. --Totten.

   3. pl. (Naut.) Red dress cloths formerly hung fore and aft
      outside of a ship's upper works on holidays.

   {Arming press} (Bookbinding), a press for stamping titles and
      designs on the covers of books.

Source : WordNet®

arming
     n : the act of equiping with weapons in preparation for war
         [syn: {armament}, {equipping}] [ant: {disarming}, {disarming}]