Regiment  —n. 1 a permanent unit of an army, usu. Commanded by a colonel and divided into several companies, troops, or batteries. B operational unit of artillery etc. 2 (usu. Foll. By of) large or formidable array or number. —v. 1 organize (esp. Oppressively) in groups or according to a system. 2 form into a regiment or regiments.  regimentation n. [latin: related to *regimen]