walling
n.— «NBC Nightly News noted that the memos provide “the fullest description yet of the techniques used by the CIA on roughly 30 detainees,” including “slapping, sleep deprivation, stress positions, nudity, something called “walling”—slamming detainees against a false wall, provided they wear a collar to minimize whiplash.”» —“Administration Releases Bush-Era Interrogation Memos” US News & World Report: Political Bulletin Apr. 17, 2009. (source: Double-Tongued Dictionary)