Waterboarding is a type of torture that has been used for a long time. It was often used to make people confess.
The victim is tied onto a table or wooden board. The questioner has a helper, whose job it is to pour water on the victim's nose and mouth through a towel or cloth, to make it difficult for him to breathe. If and when the victim is supplying answers that the questioner deems acceptable, the victim (ideally) is permitted to breathe.
- Lucas, Fred (2009-04-22). "Obama bans waterboarding terrorists, but Pentagon won't say if it still waterboards military trainees". Cybercast News Service. http://www.cnsnews.com/news/article/46974. Retrieved 2010-11-16.