boot camp 
noun chiefly North American
1A military training camp for new recruits, with very harsh discipline.He just enlisted this past year, finished his boot camp and his training at Parris Island in South Carolina....
- He even spent a couple of weeks at a military boot camp to prepare, braving extremes of weather from blistering heat to thunderstorms and a tornado.
- Once the platoon graduated from formal boot camp, a squad was assigned to each troop.
1.1A prison for young offenders, run on military lines.A total of 12 of the 107 interviews were conducted in institutions - 11 in local jails and one in the state boot camp....
- He says his son has never stuck at anything and gave him just 48 hours in the TV boot camp.
- But the point of the boot camp is that it would be tough and it might just put a stop to their behaviour.
1.2A short, intensive, and rigorous course of training: a gruelling, late-summer boot camp for would-be football players...
- The actors, too, enjoyed getting involved with the physical stuff, having trained for weeks at boot camp beforehand.
- It has evolved into a five-day boot camp of workshops from nine to four, panel discussions from four to six, and screenings after seven.
- Your students won't want to quit either because once they've been through boot camp they will be too excited about their progress to stop.