NOUN (1)

1. army unit smaller than a division;


VERB (3)

1. subject to rigid discipline, order, and systematization;
- Example: "regiment one's children"

2. form (military personnel) into a regiment;

3. assign to a regiment;
- Example: "regiment soldiers"

The Collaborative International Dictionary of English v.0.48:

Regiment \Reg"i*ment\ (-ment), v. t. [imp. & p. p. Regimented;
   p. pr. & vb. n. Regimenting.]
   1. To form into a regiment or into regiments. --Washington.
      [1913 Webster]
      [Webster 1913 Suppl.]

   2. 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.
      [Webster 1913 Suppl.]

   3. To organize and manage in a uniform and rigid manner; to
      control with a strict discipline.
      [PJC]

The Collaborative International Dictionary of English v.0.48:

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.
      [1913 Webster]

            But what are kings, when regiment is gone,
            But perfect shadows in a sunshine day? --Marlowe.
      [1913 Webster]

            The law of nature doth now require of necessity some
            kind of regiment.                     --Hocker.
      [1913 Webster]

   2. A region or district governed. [Obs.] --Spenser.
      [1913 Webster]

   3. (Mil.) A body of men, either horse, foot, or artillery,
      commanded by a colonel, and consisting of a number of
      companies, usually ten.
      [1913 Webster]

   Note: In the British army all the artillery are included in
         one regiment, which (reversing the usual practice) is
         divided into brigades.
         [1913 Webster]

   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.]
      [1913 Webster]

WordNet (r) 3.0 (2006):

regiment
    n 1: 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"