Oxford Dictionary English padded cell nounnoun BrE BrE//ˌpædɪd ˈsel// ; NAmE NAmE//ˌpædɪd ˈsel// Add to my wordlistjump to other results a room in a hospital for mentally ill people, with soft walls to prevent violent patients from injuring themselvesSee padded cell in the Oxford Advanced American DictionaryCheck pronunciation: padded cell oxfordlearnersdictionaries.com