Source : Webster's Revised Unabridged Dictionary (1913)

Regiment \Reg"i*ment\, v. t.
   To form into classified units or bodies; to systematize
   according to classes, districts or the like.

         The people are organized or regimented into bodies, and
         special functions are relegated to the several units.
                                                  --J. W.
                                                  Powell.

Regiment \Reg"i*ment\ (-ment), n. [F. r['e]giment a regiment of
   men, OF. also government, L. regimentum government, fr.
   regere to guide, rule. See {Regimen}.]
   1. Government; mode of ruling; rule; authority; regimen.
      [Obs.] --Spenser. ``Regiment of health.'' --Bacon.

            But what are kings, when regiment is gone, But
            perfect shadows in a sunshine day?    --Marlowe.

            The law of nature doth now require of necessity some
            kind of regiment.                     --Hocker.

   2. A region or district governed. [Obs.] --Spenser.

   3. (Mil.) A body of men, either horse, foot, or artillery,
      commanded by a colonel, and consisting of a number of
      companies, usually ten.

   Note: In the British army all the artillery are included in
         one regiment, which (reversing the usual practice) is
         divided into brigades.

   {Regiment of the line} (Mil.), a regiment organized for
      general service; -- in distinction from those (as the Life
      Guards) whose duties are usually special. [Eng.]

Regiment \Reg"i*ment\ (-m?nt), v. t. [imp. & p. p. {Regimented};
   p. pr. & vb. n. {Regimenting}.]
   To form into a regiment or into regiments. --Washington.

Source : WordNet®

regiment
     n : army unit smaller than a division
     v 1: subject to rigid discipline, order, and systematization;
          "regiment one's children"
     2: form (military personnel) into a regiment
     3: assign to a regiment; "regiment soldiers"