society > authority > punishment > imprisonment > prison > [noun] > military > guardroom or punishment cell (3)
Military. The punishment cell or ‘lock-up’ in a barracks; the guardroom; (also) spec. = Black Hole of Calcutta at phrases.
U.S. Military slang. Used collectively to denote soldiers who have been disgraced or punished, or the place in which they are imprisoned, esp. the…