Definition of regiments:
(n) :
(military) A unit of armed troops under the command of an officer, and consisting of several smaller units.
(v) :
(transitive) To form soldiers into a regiment.
(v) :
(transitive) To systematize, or put in rigid order.
(n) :
(now rare, archaic) Rule or governance over a person, place etc.; government, authority.
(n) :
(obsolete) The state or office of a ruler; rulership.
(n) :
(obsolete) Influence or control exercised by someone or something (especially a planet).