re-enforce

Reenforce \Re`en*force"\, n. [See {Reenforce}, v., and cf.
   {Ranforce}, {Reinforce}.]
   Something which reenforces or strengthens. Specifically:
   (a) That part of a cannon near the breech which is thicker
       than the rest of the piece, so as better to resist the
       force of the exploding powder. See Illust. of {Cannon}.
   (b) An additional thickness of canvas, cloth, or the like,
       around an eyelet, buttonhole, etc. [Written also
       {reinforce}.]
       [1913 Webster]
    

re-enforce \re-enforce\ v.
   1. to make stronger; "reinforced concrete".

   Syn: reinforce, reenforce.
        [WordNet 1.5] re-enforce
    

Reenforce \Re`en*force"\, Re-enforce \Re`-en*force"\(-f?rs"), v.
   t. [Pref. re- + enforce: cf. F. renforcer.]
   1. To strengthen with new force, assistance, material, or
      support; as, to reenforce an argument; to reenforce a
      garment; especially, to strengthen with additional troops,
      as an army or a fort, or with additional ships, as a
      fleet. [Written also {reinforce}.]
      [1913 Webster]

   2. (Psychology) To increase the likelihood that (a specific
      behavior) will be repeated by giving a reward or
      punishment to a person or animal; as, to reenforce the
      students' willingness to study by giving awards for good
      grades.
      [PJC]